Division of Horticulture. 



S. T. MATNARD. 



j:xpp:riments in greenhouse heating. 



STEAM VS. HOT WATER. 



Much discussion having been provoked relative to the results of 

 our experiments with steam and hot water for heating greenhouses, 

 reported in Bulletins No. 4 and 6, especially as to the a'-curacy of the 

 results, we have the past winter made a careful repetition of the 

 experiments to correct any errors that might be found and to verify 

 previous results. 



The boilers having been run with the greatest care possible from 

 Dec. 1st, 1889, to the present date, March 18th, and every precau- 

 tion having been taken that no error should occur, we give the 

 results in the following table : 



SUMMARY FOR HOT WATER BOILER. 



Total coal consumed from Dec. 1st, 1889, to March 18, 1890, 

 6598 lbs. Average daily temperature for the time, 49.74°. 



SUMMARY FOR STEAM BOILER. 



Total coal consumed from Dec. 1st, 1889, to March 18, 1890, 

 9784 lbs. Average daily temperature for the time, 48.39°. 



