230 GUN-COTTON AND GUNPOWDER. 
The explosion analysis with the transferred gas gave— 
a ee a ee Ca oe RES MeO eee an Mme s 
Vol. at 0° 
Volume. | Pressure. | Temp. jand 1 metre 
pressure. 
[e) . 
Original volume. ..----~----------+ +--+ ---- 120. 12 0. 3432 20.4 38. 36 
After addition of air-----..-----.----------- 198. 51 0. 4263 20.3 78.77 
After addition of oxygen ----..----- -------- 230. 33 0. 4478 20.5 95, 89 
After explosion..--..-.---------+++---++--- 201.14 0. 4323 19.6 81.47 
After absorption of CO?..---.-------------- 189, 46 0. 4276 21.0 75, 23 
After addition of H...---.----------------- 261. 02 0. 4817 21.2 116. 66 
After explosion....-.------------+---+----- 174, 20 Q. 4130 18.3 67, 43 
If the formule previously used be applied, we get— 
Ginbonic acid ij. oe -ci enone bes pee cc ie eee ee core Se = 3.95 
Hydrogen. --.-.- =. +200 ce nnn cee cnet seme se ce teens recesses 2 == 524 
Miarah 9§)-4,-.<.i eck ppecrertoeereceree ppewer te saaccsr ee tErte = 2,99 
Nitrogen ----..--- 2-22-22 ee eee eee eee cee eee ee eee == 26,88 
Hence the small-arms: powder contains in 100 volumes— 
Carbonic acid ....-- +--+ +++. eee ee eee ee eee eee ee ee eee teres 48.90 
Sulphuretted hydrogen .-...-.-..-------- -----+----+-- e+-+------ 0.67 
Camommie OS10C ec re eee ee cope ee a meen Ha) IGS 5.18 
Uy) Beats GW 22 ee Sse ek a ce le cat eon 3.02 
LOE Ci niceties <= 2 == Sse se = = 2 oleae en ee ae oe eee 6.90 
Nitrogen 2.2... oils eie eine en sieielcisin's eine bsisinie ce nbn cl aeesdaee---s 35.33 
100.00 
The solid residue in the mortar was treated with hot water and the liquid 
filtered. No sulphide of potassium was found to be present. The analysis 
was executed in the same manner as with the ordnance powder. 
From the results of this analysis and from those of the gas analysis, direct 
measurement having shown that 34.153 grammes of ordnance powder give 
7,738 cubic centimetres of gas, the following scheme for the products of com- 
bustion of the ordnance powder may be given: 
Sulnpate Gf poiushl=< 2. eae uaeinss > kee delte e-er eeeee S 12.354 
Wacbonate lof potash | p.g ideals se <slp clog =e -G Gist Emer eee 7.096 
iy posulphiteof potash <oo.- secieae.<intl- As iis cigs BEER SAE EU 0.605 
Gharcoalle .20 2. cs rss ss dcte seni scare sc toon crete SACRE RNAS EINE 0.887 
S/THND AUR S a LAS Si IN Rip A tt gs en EIR SIGS 5 2 Sa ete 0.397 
Desqumearbonateor ammonig: >. c5.<2- 222 oS wie pee ge eee se ies 0.908 
ONTTO SoMa revle aoe sae ce tte melee ae 2.5 c.c/e 2 eee tee eteeie ene = oe to 
MU UCM TALC HACE yy 55 216. «in, oju ieee iain ci oo, cia, m 0 ee tee ais eee 7.442 
Gir d SOTETLS > TIE SR SS bide Cs i iat a erly Jie bene esther. 0.504 
ERY iO OM eee elene re eral oie ~, s.nin 0 FRA gaia ome) = © 6,5, 5 eae eae es ae eer 0.047 
DUI pMUrctTea MV ULOP OM = 0 2 eae shee cam a 2:0 = oe emer ne Sete eee 0.079 
eres eran rege & Seo SO Cae eS is eR emir nll Rt a ri 0 167 
boyy beyth ep 95 (9504 Ce a telat te emi ale RR ee SA Mi LE all it Be oS a a 0.235 
