Highest temperature in chamber | | | | | | | registered by external thermometer deg.| 293 | 320 | 284 | 284 | 302 | 284 | 275 Mean temperature in chamber | | | | | | | registered by external thermometer " | 284 | 284 | 266 | 266 | 284 | 266 | 266 Trial closed at hours, min | 4.30|11.0 | 2.10| 3.50| 4.35|10.10|12.03 Max. therm. registered in mattress deg.| - | - | - | - | - | - | - Max. therm. registered in overcoat "| 253 | 244 | 226 | - | - | - | 223 Max. therm. registered in winter coat "| - | - | - | 230 | 232 | 223 | - Max. therm. regis'd in winter trousers "| 262 | - | 253 | - | - | - | - Max. therm. regis'd in summer trousers | 280 | - | 264 | - | - | - | - Time required to generate steam min | 23 | 38 | 7 | 20 | 25 | 20 | 7 Time required to generate 212 deg. | | | | | | | in chamber " | 30 | 48 | 15 | 35 | 43 | 29 | 15 Time required to generate 212 deg. | | | | | | | in clothes " | - | - | 42 | - | - | - | - Time required to generate 221 deg. | | | | | | | in clothes " | - | - | - | 127 | 92 | 81 | 107 Total duration of process " | 135 | 105 | 57 | 127 | 101 | 87 | 107 Water evaporated, in gallons | 6.93| - | - | 9.24| - | 3.63| 4.84 Consumption of spirits of wine pints | - | - | - | - | - | - | - Consumption of gas, in cubic feet | - | - | - | - | - | - | - Consumption of cokes, in cbs | - | - | 8.8 |16.5 | - | - | - Consumption of charcoal, in cbs | - | - | - | - | - |14.3 |13.8 ----------------------------------------+-----+-----+-----+-----+-----+-----+----- N.B.--In every case, even in the trials V. and X., in which the temperature in the disinfecting chamber rose above 320 deg. Fah., the clothes, owing to the complete saturation of the hot air with live steam, remained absolutely unimpaired. The column "water evaporated" shows the quantity of live steam passing through the disinfecting chamber averages 13 cubic feet per minute with gas or spirits, and 22 cubic feet with charcoal or coke in the portable and 33 cubic feet in the stationary apparatus. Trials VI., VII., and VIII. took place in open air. According to trial XII., from 28 to 30 complete suits of clothes can be disinfected at an expenditure of about 75 cbs. of coke per diem. * * * * * DRAWING INSTRUMENT FOR ACCURATE WORK. BY J. LEHRKE.