392 



Annals of Horticulture. 



wrought iron frame bolted to the inside end of the house. 

 This is found to be of sufficient power to operate 9 sashes on 

 each side of a house 100x31 feet, amply sufficient for ventila- 

 tion, and either side can be worked separately at will by 

 the same winch." " By running an auxiliary cord back from 

 sash to cable in the opposite direction to that of the lifting- 







J \\ 1 



1 I 



'/ 





Fig. 70 



cord," a lock is provided for the sash, whether they are open 

 or closed. At Lincoln Park, Chicago, where this is used, $26 

 is the cost of the apparatus for a 100-feet house. — American 

 Florist, 803 > a ^ so Popular Garde?zing, 22J. 



Device for Heating Water. — (Fig. 71.) " A cheap way 

 to warm a tank of water is shown in illustration. Assuming 

 that the water-tank is 36 inches deep, get a tin pail as deep 

 and 10 inches in diameter, made with a cover, in which an 

 inch hole is put. Have an inch tube, b, two inches long, 

 soldered on near the bottom and punched through, and to this 



