Sunday, May 10, 2026

Josiah Hunt and The Palmer Furnace©


Author’s note -- I hope that you enjoy learning from this resource!  To help me to continue to provide valuable free content, please consider showing your appreciation by leaving a donation HERE.  Thank you and Happy Trails!



Dr. Jonathan Palmer, a modern caver, is credited with publicizing the use of the “Palmer Furnace” as it is known today by us modern folk.  He used a candle or a carbide lamp to exhaust warm gases, up under a shirt or a blanket, to quickly warm up, when cold, an idea he probably got from old-time hard rock miners. 

 

But the idea behind the Palmer Furnace was known at least as far back as the late 18th century, it dates to 1793 to be exact.  Some authors attribute the idea of using a small smoldering fire, built in a pit, and partly smothered with dirt, while sitting above it, wrapped in a blanket to Lewis Wetzel; others such as Allen Eckert, the author of The Frontiersman, attributed the early use of a Palmer Furnace to Simon Kenton.  Both Lewis Wetzel and Simon Kenton were active during the 1790’s in the Upper Ohio Valley area and while I don’t doubt Mr. Eckert; I believe the originator of the “secret camp-fire” technique was actually a little known frontiersman named Josiah Hunt.

 

The earliest known primary biographical source that I can find, that speaks of the “secret camp-fire”, dates to 1847, and was written by Judge Thomas Coke Wright.  Judge Wright was the earliest Greene County historian and was also a contemporary of many of early settlers in Greene County and who had spoken with Josiah Hunt, whom he described as speaking with “...a tone of candor and sincerity, as well as modesty, in his manner of relating the thrilling scenes in which he had been an actor...1.  In this account, written Judge Wright, and sent by him to Henry Howe, for inclusion in his Historical Collections of Ohio, 1847, the creation of “secret camp-fire” is attributed to Josiah Hunt. 

 


During The Northwest Indian War of 1785 to 1795, which ended with the Battle of Fallen Timbers and the Treaty of Greenville, signed in 1795, according to an account written by Judge Wright, Josiah Hunt in 1793 worked both as a soldier and a hunter supplying meat to the garrison at Fort Greene-ville, as it was then known. 

 


Because the Native Americans of the Confederated Tribes would ambush anyone leaving the fort, Hunt would leave the Fort after dark, walk towards his chosen hunting ground and then bivouac for night, before hunting in the morning.  During the winter of 1793, he used the following technique to keep from freezing to death in the night, a technique that is like what we know of today as a ‘Palmer Furnace’.

 


The narrative goes on to say that the Native American warriors who knew of this daring hunter, and who were actively hunting him, were so impressed with the ingenuity of his secret campfire, a trick that, apparently, they did not know about, and his skill as a warrior and hunter that they promoted him to “Captain”, a term of great respect among Native Americans warriors of the time.  The fact that the Native American warriors were impressed with how he made his secret campfires, also leads me to believe that he was the inventor of this method.

 

Don’t forget to come back next week and read “Josiah Hunt, How He Made His Secret Camp-Fires”, where we will talk about how to make an emergency furnace to keep from freezing to death.

 


I hope that you enjoy learning from this resource!  To help me to continue to provide valuable free content, please consider showing your appreciation by leaving a donation HERE.  Thank you and Happy Trails!

 

I hope that you continue to enjoy The Woodsman’s Journal Online and look for me on YouTube at BandanaMan Productions for other related videos, HERE.  Don’t forget to follow me on both The Woodsman’s Journal Online, HERE, and subscribe to BandanaMan Productions on YouTube.  If you have questions, as always, feel free to leave a comment on either site.  I announce new articles on Facebook at Eric Reynolds, on Instagram at bandanamanaproductions, and on VK at Eric Reynolds, so watch for me.

 

That is all for now, and as always, until next time, Happy Trails!

 

Sources

 

Bigelow, David; History of Prominent Mercantile and Manufacturing Firms in the United States, Vol VI, [David Bigelow, Boston, 1857], page 265-270, https://www.google.com/books/edition/History_of_Prominent_Mercantile_and_Manu/y1w-AQAAMAAJ?hl=en&gbpv=1&dq=%22History+of+Prominent+Mercantile+and+Manufacturing+Firms+in+the+United+States%22+1857+%22josiah+Hunt%22&pg=PA266&printsec=frontcover, accessed May 7, 2026

 

Howe, Henry; Historical Collections of Ohio, [Derby, Bradley & Company, Cincinnati, 1847], page 199 to 200, https://books.google.com/books?id=ri8WAAAAYAAJ&pg=PA199&lpg=PA199&dq=%22josiah+hunt%22+roth&source=bl&ots=M7iiOgL5Xj&sig=WXic_CR-GpPKHcgxxeXT3oCTcz4&hl=en&sa=X&ei=noyDU8XEDuilsQTX7ICQCw&ved=0CEQQ6AEwBg#v=onepage&q=%22josiah%20hunt%22%20roth&f=false, accessed May 7, 2026

 

Rapacz, Andrea; Personal conversation regarding The Phineas Meigs’ Hat, May 01, 2016, 10:51 am

 

University of Illinois, Urbana-Champaign; “N. W. Territory Map, 1801”, by William Barker, [© 2026], https://digital.library.illinois.edu/items/9d2ba5e0-994e-0134-2096-0050569601ca-2, accessed May 9, 2026

 

Webster, Noah; A Dictionary of the English Language: Compiled for the Use of Common Schools, [George Goodwin & Sons, Hartford, 1817], page 275, https://books.google.com/books?id=fJ8RAAAAIAAJ&pg=PA275&dq=ross+bark+dictionary&hl=en&sa=X&ei=T5kXUu-ZAcTd4QTxtYCQCw&ved=0CC4Q6AEwAA#v=onepage&q=ross%20bark%20dictionary&f=false, accessed May 9, 2026

 

 


Sunday, May 3, 2026

Emergency Shelter, Part Four – Tea Candles!©

 


Author’s note -- I hope that you enjoy learning from this resource!  To help me to continue to provide valuable free content, please consider showing your appreciation by leaving a donation HERE.  Thank you and Happy Trails!

 

So you’ve decided to stay where you are, immediately seeking shelter and making do with the available terrain.  You found a windbreak to huddle behind and pulled a trash bag out, ripped a face hole and tugged it down around you.  How could you make your emergency shelter even better?  With a tea candle of course!

  

The heat from a candle flame can be used to warm your body by allowing the exhaust gases from the burning candle to flow under a shirt, poncho or trash-bag pulled out and away from your body, a technique discovered originally by cold miners, and later nicknamed by cavers the “Palmer furnace”, after Dr. Jonathan Palmer, who advocated its use (for more  on Palmer Furnaces read It’s Time to Tune Up Your Palmer Furnace!©).  According to Genevieve, the author of “A Month of Wilderness Medicine”, within minutes of lighting her candle, the palmer furnace had her “nice and toasty in the 55 degree cave”.

 

 

According to scientists affiliated with Cambridge University, 8 grams of petroleum-based wax creates about 80 watts of energy, of which 95% is heat.  In other words, since the average tea candle is about 17 grams of wax, it will generate about 170 watts of energy over four hours, the length of time a tea candle burns, of which 161.5 watts will be heat energy.

 

According to research by the Cornish Scent Company and Sylvane Inc., one tea candle can heat about 16 square feet or 1.5 square meters1.  Since a person sitting in a fetal or tucked position, while holding their knees, takes up a footprint of 1-½ to 2 feet wide by 2 feet deep, occupying roughly 3 to 4 square feet of space, this a metric footprint of 45 to 60 cm wide by 60 cm deep, or 91 to 121 cm squared.  This means that a single tea candle can provide enough heat to help prevent hypothermia in a small, enclosed space like the cab of a stuck vehicle, a small tent or a trash-bag shelter!

 


So even though, according to the US Airforce Survival experts, making do with the available terrain was the worst choice, if you create a palmer furnace out of a trash-bag and a tea-candle, you might survive the storm.

 


I hope that you enjoy learning from this resource!  To help me to continue to provide valuable free content, please consider showing your appreciation by leaving a donation HERE.  Thank you and Happy Trails!

 

I hope that you continue to enjoy The Woodsman’s Journal Online and look for me on YouTube at BandanaMan Productions for other related videos, HERE.  Don’t forget to follow me on both The Woodsman’s Journal Online, HERE, and subscribe to BandanaMan Productions on YouTube.  If you have questions, as always, feel free to leave a comment on either site.  I announce new articles on Facebook at Eric Reynolds, on Instagram at bandanamanaproductions, so watch for me.

 

That is all for now, and as always, until next time, Happy Trails!

 

 

Sources

 

Genevieve; “A Month of Wilderness Medicine”, October 18, 2018, [© Copyright 1995-2026 Regents of the University of Michigan], https://medschool.umich.edu/dose-reality/month-wilderness-medicine, accessed May 2, 2026

 

Midnight Sun Council; “Extreme Scouting”, Scouting Nov-Dec 2008, page 32, https://books.google.com/books?id=4vwDAAAAMBAJ&pg=PA32&dq=%22at+another+station,+scouts+learned%22&hl=en&sa=X&ved=2ahUKEwjBwb6ZxpuUAxU3UGcHHf6wNiAQ6AF6BAgGEAM#v=onepage&q=%22at%20another%20station%2C%20scouts%20learned%22&f=false, accessed May 2, 2026

 

Pearl; “Pearl’s Cold Climate Survival Candle”, United States Army Aviation Digest, Volume 18, October 1972, page 40, https://books.google.com/books?id=fX_PMHbuxfQC&pg=RA8-PA40&dq=shelter+candle+heat&hl=en&newbks=1&newbks_redir=0&sa=X&ved=2ahUKEwjhh-Cy28aJAxXohIkEHZPnFAI4ChDoAXoECAYQAg#v=onepage&q=shelter%20candle%20heat&f=false, accessed May 2, 2026

 

The Cornish Scent Company; “Can you heat a room with a candle!”, February 2, 2023, https://www.thecornishscentcompany.com/blogs/news/can-you-heat-a-room-with-a-candle?srsltid=AfmBOoov2GdSouuB3oJa9vTWNU7N41Cd8EUll6kjqH8YNerRzaYVk5Ux, accessed May 2, 2026

 

U.S. Department of The Army; Guide For Platoon Sergeant, PAM 350-13, [Headquarters, Dept of the Army, August 1967], page 87, https://books.google.com/books?id=0h25AAAAIAAJ&pg=PP7&dq=pam+350-13&hl=en&newbks=1&newbks_redir=0&sa=X&ved=2ahUKEwi9u9if5dCJAxUgpIkEHbwEJcUQ6AF6BAgMEAI#v=onepage&q=pam%20350-13&f=false, accessed May 2, 2026

 


Sunday, April 26, 2026

I’m Helping my Kids Move this Weekend ©



Author’s note -- I hope that you enjoy learning from this resource!  To help me to continue to provide valuable free content, please consider showing your appreciation by leaving a donation HERE.  Thank you and Happy Trails!

 

Unfortunately our regularly scheduled broadcast of “Emergency Shelter, Part Four – Candles!©”, has been preempted by “I’m Helping my Kids Move this Weekend”.

 



But I found a fantastic article on how to move yourself AND save money, so I thought I would share it with you.  There were some terrific tips in it, some I knew and some I didn’t.

 

Come back next week to read your regularly scheduled broadcast of how tea candles can save your life, in “Emergency Shelter, Part Four – Candles!©”.

 


I hope that you enjoy learning from this resource!  To help me to continue to provide valuable free content, please consider showing your appreciation by leaving a donation HERE.  Thank you and Happy Trails!

 

I hope that you continue to enjoy The Woodsman’s Journal Online and look for me on YouTube at BandanaMan Productions for other related videos, HERE.  Don’t forget to follow me on both The Woodsman’s Journal Online, HERE, and subscribe to BandanaMan Productions on YouTube.  If you have questions, as always, feel free to leave a comment on either site.  I announce new articles on Facebook at Eric Reynolds, on Instagram at bandanamanaproductions, and on VK at Eric Reynolds, so watch for me.

 

That is all for now, and as always, until next time, Happy Trails!

 

Sources

 

Tricocci, Sheryl; “People who move themselves save, and set their own schedule”, Gainesville Sun, July 7, 1985, page 5G, https://books.google.com/books?id=R50RAAAAIBAJ&pg=PA63&dq=%22people+who+move+themselves%22&article_id=5502,2301253&hl=en&sa=X&ved=2ahUKEwiz0Nznr4eUAxU2wvACHZG6EXwQ6AF6BAgJEAM#v=onepage&q=%22people%20who%20move%20themselves%22&f=false, accessed April 25, 2026


Sunday, April 19, 2026

Emergency Shelter, Part Three©



 

Author’s note -- I hope that you enjoy learning from this resource!  To help me to continue to provide valuable free content, please consider showing your appreciation by leaving a donation HERE.  Thank you and Happy Trails!

 

You’re on an open hillside, a storm is rolling in from the west, heading your way, it’s already started to rain, and your miles from camp.   You decide to stay where you are, immediately seeking shelter and making do with the available terrain. 


 Could you survive?  You chose to stay put, choice ‘D’, the worst choice according to survival experts at Fairchild AFB, to survive you need to get out of the wind and rain.  A trash bag might be your only hope.

 


First off, you need protection from the wind, as wind will enhance heat loss from convection and combines with conduction and evaporation to further chill you.  Convection alone is responsible for about 15 percent of the body’s heat loss, and evaporation from a body at rest can add another 20 percent. 



Look for a large boulder, a natural parapet, a tree trunk, the root ball of a downed tree, anything to block the wind.  You can make a windbreak of rocks or logs, or if you are in a snow field, you can make a wall of snow blocks or kick out a snow-hole.

 


Next you need shelter from the rain.  It is important to stay dry, because wet clothing conducts heat away from your body 25 times faster than dry clothing, and moisture evaporating from wet layers of clothing also causes substantial heat loss.  Also wet clothes lose their ability to trap air, significantly lowering their insulating ability.  

 

 

If you have a plastic trash bag you can quickly make a trash-bag shelter.  If you have a space blanket, which when unfolded measure around 52” x 84, or a similarly sized piece of plastic or tarpaulin, you can either make a match-coat or any type of tarp shelter to protect yourself from the rain.

 


Trash-bag shelters are highly effective in cold, wet, or windy conditions.  They prevent hypothermia by trapping your body heat, acting as a vapor barrier and a windbreak, and can significantly increase the temperature inside the bag.  An experiment on YouTube by Alex Coker showing a trash-bag shelter raising the interior temperature from 29°F (-1.6°C) up to 90°F (32°C) in just a few minutes,

 


Use a large (55-gallon), 3-mil thick contractor bag rather than a thin household garbage bag for better durability. 


Cut a small, roughly 5-inch hole in one corner or at the top of the bag as a face hole.  The hole allows you to breathe, preventing suffocation and condensation from your breath building up inside the bag, wetting and chilling you.  Avoid making the hole too large, as this allows heat to escape and reduces the shelter's effectiveness.

 

Some authors suggest cutting two arm holes to create a “poncho”, however the more holes you put in the bag the more your body heat will escape.  

 

Place the bag over your head, pulling the bag down over your body.  Remember your shelter should only be large enough for you to sit or lie down in.  A smaller space is easier to heat.  Also tuck the bottom of the bag under your legs to prevent a “chimney-effect”, as the body-warmed air escapes up through the face hole and draws in cold air from below.

 

Don’t sit on the ground. 

Pile up dry insulation, like leaves, spruce boughs, your pack, because the ground will drain your body heat much faster than the air.  If nothing else, crouch so that only your feet touch the ground.

 

Stuff the bag for added insulation, with dry leaves, grass, or pine needles to increase its effectiveness by providing loft and actual insulation, rather than it just being a vapor barrier.

 

Black bags absorb solar energy during the day to help warm the inside but are harder for rescuers to see.  Orange bags are easier to see, but don’t absorb as much warmth from the Sun.

 

If possible, remove any wet clothes before using a trash-bag shelter, as wet clothing significantly accelerates hypothermia.  Removing wet clothing or using a vapor barrier to decrease convection and evaporation can reduce total heat loss by 19–42% 

       

Why Take Them Off?  Wet clothes against your skin will draw body heat away, even if you are out of the wind.  If you have dry spares, change into dry clothes before getting into the shelter.  If you don’t have dry spare clothing, remove your wet clothes and wring them out before putting them back and entering your shelter.  This reduces evaporative heat loss, allowing your body to warm up faster. 

 

When should you keep them on?  If stripping down to remove your wet clothing puts you in an immediate, severe danger of freezing due to extreme, gusty cold, leave them on to provide a small amount of insulation and use the shelter bag as a wind and vapor barrier.  However, your priority is to get dry as soon as possible.

 

For more information on trash-bag shelters read “Using your poncho or a trash bag as an Emergency Shelter ©”, HERE.

 

Don’t forget to come back next week and read “Tea Candles can Save Your Life!©”, where we will talk how tea candles can save your life.

 


I hope that you enjoy learning from this resource!  To help me to continue to provide valuable free content, please consider showing your appreciation by leaving a donation HERE.  Thank you and Happy Trails!

 

I hope that you continue to enjoy The Woodsman’s Journal Online and look for me on YouTube at BandanaMan Productions for other related videos, HERE.  Don’t forget to follow me on both The Woodsman’s Journal Online, HERE, and subscribe to BandanaMan Productions on YouTube.  If you have questions, as always, feel free to leave a comment on either site.  I announce new articles on Facebook at Eric Reynolds, on Instagram at bandanamanaproductions, and on VK at Eric Reynolds, so watch for me.

 

That is all for now, and as always, until next time, Happy Trails!

 

 

Sources

 

Associated Press; “Lejeune Marines learning to cope with cold weather”, Wilmington Morning Star, March 3, 1981 page 2B, https://books.google.com/books?id=u0dOAAAAIBAJ&pg=PA1&dq=candle+survival&article_id=2981,686314&hl=en&sa=X&ved=2ahUKEwicp9nzlPGTAxWohysGHYpzGXUQ6AF6BAgMEAM#v=onepage&q=candle%20survival&f=false, accessed April 18, 2026

 

Auerbach, Paul S. Ed.; Auerbach's Wilderness Medicine E-Book, 7th Edition, Elsevier, page 1333, https://www.google.com/books/edition/Auerbach_s_Wilderness_Medicine_E_Book/O2EgDQAAQBAJ?hl=en&gbpv=1&dq=survival+wind+barrier+%22plastic+bag%22+wilderness&pg=PA1333&printsec=frontcover, April 18, 2026

 

Hagen LT, Brattebø G, Dipl-Math JA, Wiggen Ø, Østerås Ø, Mydske S, Thomassen Ø.; “Effect of wet clothing removal on skin temperature in subjects exposed to cold and wrapped in a vapor barrier: a human, randomized, crossover field study”, BMC Emergency Medicine, January 25, 2024, Vol. 24, No. 1, https://pmc.ncbi.nlm.nih.gov/articles/PMC10809790/pdf/12873_2024_Article_937.pdf, accessed April 18, 2026

 

Henriksson, Otto; Lundgren, Peter; Kuklane, Kalev; Holmér, Ingvar; Naredi, Peter and Björnstig, Ulf; “Protection against Cold in Prehospital Care: Evaporative Heat Loss Reduction by Wet Clothing Removal or the Addition of a Vapor Barrier—A Thermal Manikin Study”, Prehospital and Disaster Medicine, March 2012, Vol. 57, paged 53 to 58, https://www.researchgate.net/publication/221973839_Protection_against_Cold_in_Prehospital_Care_Evaporative_Heat_Loss_Reduction_by_Wet_Clothing_Removal_or_the_Addition_of_a_Vapor_Barrier-A_Thermal_Manikin_Study, access April 18, 2026

 

OpenStax CNX; “Anatomy and Physiology II: Module 8: Metabolism and Nutrition”, https://courses.lumenlearning.com/suny-ap2/chapter/energy-and-heat-balance/#:~:text=When%20the%20environment%20is%20not,be%20replaced%20by%20cooler%20water, accessed April 18, 2026