USE OF SULPHUROUS DISINFECTANTS. 



221 



gested by M. E. Peligot ; and all danger in employing it is obviated 

 in the new burner invented by M. Ckiandi Bey, engineer. This ap- 

 paratus is illustrated, with a view of its interior arrangement, in Fig. 

 2 ; and a more detailed explanation of its parts can be obtained from 

 the examination of Fig. 3. 



M. Ckiandi's burner is composed of an exterior receiver of tinned 

 copper, A B C D, containing an interior vessel, I H E F, to the sides of 

 which are fixed three siphons, R S. To put it in operation, the cylin- 

 drical tube, KLMN, is placed in the interior vessel ; sulphide of car- 

 bon is poured in up to the level a a, and the exterior receiver is then 

 filled with water up to the level b b. By means of the siphons the water 



Fig. 3. M. Ckiandi Bet's Burner, Sectional View. 



penetrates into the interior vessel, presses upon the sulphide of carbon, 

 which is heavier than it, and drives it in the interior tube up to the 

 level a' a', where it is taken up by a cotton wick, which is lighted. 

 The upper end of the tube is crowned with a chimney, P Q, to facili- 

 tate the draught. The combustion of the sulphide of carbon may be 

 increased or slackened at will by raising or lowering the level, b b, of 

 the water in the external receiver ; and this facility will be found of 

 advantage in many cases. 



The burner is placed in the room to be disinfected and lit, when 

 the room is evacuated and shut up tight. When all the sulphide of 

 carbon has been burned, its place is taken by water, and the lamp goes 

 out of itself ; in the mean time the burning goes on with great regu- 

 larity, and without any danger. About two and a half kilogrammes (six 

 and a quarter pounds) of sulphide of carbon are sufficient for a room 

 of a hundred cubic metres. The process is effective and economical 

 enough ; for sulphide of carbon is sold commercially for fifty centimes 

 (about ten cents) per kilogi-amme, which gives about twenty-five cents 



