170 Agkiculttjkal Experiment Station, Ithaca, K. Y. 



ft. and 3 in. beyond by pipes at right angles, thus introducing four 

 extra angles in this riser. The following table shows the average 

 temperatures at the boiler and at the east end of this riser in the steam 

 and hot water tests just preceding and following this change: 



HOT water. 



Dec. 22-Jan. 16, without extra crook. 



Average temperature boiler 159 14-43 



" " riser east end 145 10-43 



Feb. 10-23, with extra crook. 



Average temperature boiler 178 6-11 



" " riser east end 131 18-23 



steam GENERAL AVERAGE. 



Jan. 16-31, without extra crook. 



Average temperature boiler 206 8-21 



" " riser east end 187 1-21 



Jan. 31-Feb. 10, with extra crook. 



Average temperature boiler 200 1-3 



" " riser east end 135 5-21 



steam 1 LB. OR MORE PRESSURE. 



Jan, 16-31, without crook. 



Average temperature boiler 211 1-4 



" " riser east end 212 1-4 



Jan. 31-Feb. 10, with crook. 



Average temperature boiler 211 3-7 



" " riser east end 212 



steam NO PRESSURE. 



Jan. 16-31, without crook. 



Average temperature boiler 204 4-5 



" " riser east end 184 



Jan. 31-Feb. 18, with crook. 



Average temperature boiler 193 3-11 



" " riser east end 123 3-11 



This shows that, taken as a whole, these extra angles impeded the 

 circulation of steam more than of hot water. But if we compare the 

 temperatures taken under one or more pounds prsesure, as in the third 

 part of the table, it is seen that there the extra angles have no percept- 



