114 How TO Gkow Cut Flowers. 



sired, a supply tank can be connected with the cylinder 

 at J and operated by a valve, but the first method is pre- 

 ferable and is little trouble, and one then knows just the 

 amount used. With all valves closed except the four 

 three-quarter ones leading direct from the main to the 

 different houses, as well as those through which the va- 

 por passes into the houses from the same sized pipe, open 

 the one at K, examining by pet cock H if there is any 

 condensation in the feed pipe. If not, close pet cock 

 and open valve G, which will admit steam to the cylin- 

 der A, which it will fill and soon be ready for distribu- 

 tion. To avoid the condensation of the vapor, it is 

 necessary that all pipes used for its distribution should 

 bo hot when it is admitted to them. By closing now 

 for a short time valve G and opening valve I, direct 

 steam from the boiler will accomplish this, and as soon 

 as steam is discharged from the extreme end of the dis- 

 tributing pipes, close valve I, open valve G, also in a 

 moment after, valve F, and the vapor will at once be 

 distributed through the houses. From three to five 

 minutes will be required to empty the cylinder of nico- 

 tine. 



Steam then being shut out of the cylinder by closing 

 valve G, all pressure will soon pass off into the main 

 through valve F. AMien this is accomplished, another 

 quart may be supplied through point J, and the same 

 process repeated for the next four houses, taking care to 

 close the valves to those r.lready finished, and opening 

 those that are to receive the next treatment. 



