30 JOURNAL OF THE 



15 per cent, light oils and aUout 80 per cent, heavy oils. They 

 may be completely separated with siphons and are pnmped into 

 their respective reservoirs. After longer standing, small quan- 

 tities of oil separate from pyroligneous waste and are transferred 

 to the oil tanks. The acid waste is sold to the Southern Chemical 

 Co., and wood alcohol, crude pyroligneous acid and a black dye 

 manufactured from it. It is also offered for sale as a cheap and 

 reliable disinfectant. 



The wood creosote oil is a very heavy black liquid, resistiniJ^ 

 the action of salt or fresh water, and is used principally in the 

 preservation of wood, but patents have been issued for a mixture 

 containing it for use as a ''sheep di}),'' and it is recommended as 

 an insecticide. 



The creosotiug plant consists in steel reservoirs, creosoting 

 cylinders, pumps, etc. The steel reservoirs are constructed as the 

 creosoting cylinders and are used for heating the oil preparatory 

 to use. They are connected with the oil tank and creosoting cylin- 

 ders, and contain a coil of steam piping connected with the boilers. 

 The creosoting cylinders are made of steel guaranteed to 

 stand 150 — 200 pounds pressure, and lie on a bed of masonry 

 on a vel with ground. They are of varying length (from (30 

 to 100 feet long by 6 feet in diameter), having open ends with 

 perfectly fitting caps. These caps can be rendered air-tight with 

 asbestos packing. Into this cylinder runs a tramway with a 

 movable section at the doorwav. Under this track there is a coil 

 of piping, usually about six times as long as the cylinder, connect- 

 ing with the boilers. In the top, at intervals, are screws attached 

 to semi-circular iron bands, used for holding the charge in posi- 

 tion, and adjustal)le from the outside. At the end are the various 

 pipes connecting witii suction j^umps, force pumps and oil tanks. 



This company has in operation four of these cylinders, one 

 65x6, 90x6, 75x6, 100x6, with a capacity of 40,000 feet per 

 day, costing from $800 to $1,200. No estimate can be had 

 of their durability. Those now operated have been in use for 

 several years and are apparently as good as new. 



