g" iflammable gases : red-hot iron or^harcpal do not expLode.it : 



Onepaft of carbonic aqi^, mixed \vit!i''s6V¥if ^UM(ft'^ti''^V33 

 Sife'^iitdre; bi'.oiifeVpa^t pf 'riitirb^^ 



',^'^'ffi'^jjpib^tH^'y 'ii^?Mify% '4"gra^''^ab'^' &i* 'hm8m%W4 



J^^H'm' aiaptieter,' apd'a ft)')6t Ipng, more thlaW a'secoiid' W^^ 

 rtWilifdd 6'efof^^ ithe^ate^'f^M'M fbi^'bne end tq th'e,o*e^!'alV(!r 

 I Miid tTi^t ip' tul^e^ of o^'e-^sievfe'^tK; of ar^ inch in diahie'ter; '^^j^t 

 pldiivb'iniitufe^' 'could' hlft' 'be 'fi^efl wllea they wei-6 dpened m 

 tHe''^d'tmdsph^'ri^''a'nd-tH6;t} theialtf^^tUb'^'' prevM^S &ip\6im' 

 fi&ermrfwi^ab^,f •-^^^-''" .^'^'^'^['''^N "^ :f''^ V^^^^ 



^'^ HeasbniVig '6h thysfe tootig'^^tid'nHtio'ftati'd^ Mm^emil'^i^ 

 puinphri^ mvjf, A^^'iidfloii^ i'fr to^rfc^ite the ■pri^fcip^^s''WM 

 ^ttid/a iilili ia m '^&y^Mi^mmmlom. \Ue'i?iVi'%ik^''^'^i 



Its contrnmai tmtiinmatWirf'atiatM^^aes^ soabryana reaoiiy 

 grasped b^^'fhr J5,o<vfeffal mih'd bf our siatiUytJ^^Aed rb'afi iiiitfke- 

 aiate resiilt-^'tlie possibihtjf cif bbiist'WcW^g U I^hi^/hlW 

 cooling^owers b'f azote or ca^jaoriic adiH To^hib'dbf bbn'ib'tiMofi,^ 

 or the cooiiiig^hd^t^trs of the oj?er^M^-ei 'ithrPhgii' 4i?5ch/the- W 

 entete\i M: thMife, fexit; shbutd pifevbftfip' tibii\tti'uniii^tibh"i^f* 

 explosiort. . , 



'■',OW limits will pot tlllbw' us to detail at length all the steps fe^* 

 wiiic^h' ferf 'Hutiiphry D^vy brbuglit ''hl^'lanljp' to tH6 berfectibtt 

 it ultttri^teiy pb'ss,es9^aV^'e' ckn ^ otity briefly ' riiehtit^' 'thay'Hiy' 

 first ttiafe '\<-etp tiri',the ieffebt'of laiiips supplied ^ith a,''iv^y| 

 Kmi|:ea atBUlatibhbf^aii-^j'^KM bVi lympjifUi^hisliediWit^^ 

 ctf tiibes' at thg ■t'6^''a^a'libtlbiil, 'aivd^of 'soih^^ dra'nieters' ^Hiit- 

 explosions could npt pass thropgh theiii ^'but'lie fo'iiftd^'thalf' 

 liAless tl^e tubes' vtere very short and ijliimbijovti, the 'flaixie tbiild' 

 hoft be weir sii^pbHed ; " and in trying tubes of 'the diaiii^jlfeif' 

 of one- seventh or one-eighth of an inch, I determined that 

 ^hey were safq only to small (^udntities' bf '^■¥ii!^sive^ri3iki'a5fey 

 and when of a giren length ; arid that tubes,' everi of a ' rriiich 



ferv apeVi 

 tlreir 



eicrhth' 



fhe^^plbfeiyij'tb'p^^'''thfbW^hlt';-^hdthat '^''^■iai ,.«„...- ^.^ 



glilkll lubes, i>f of''ap6rfc\ir6sv'stof)pbd'4kploMbri'bV^h\\^ tli'^^ 



denth of their sides was only equal to their diaraeterj^'aua.ii'i 

 •jatlJy ii/i«J yiUiidJidiuoy «<^9t ii3i>ia qiuwb-aiu ariJ oaaol i>ii 



