228 



Bulletin 132. 



The report of George W. Cavanaugh, assistant chemist to the 

 Experiment Station, is as follows : 



"The four principal fertilizing elements nitrogen (N), phos- 

 phoric acid(P^ O5), potash (K^O) and lime (CaO) were determined 

 in the dry substance of the celery plant, roots excluded. 



* ' In samples XVIII. and XX. , nitrates were found in appreciable 

 quantities. Potash seems to be the most variable ingredient 

 ranging from 4.63 percent to 1.97 per cent. 



' ' Whenever potash was used in the fertilizers it is found in 



67, — Bunches of six plants of each of three lots : XVIII. , nitrate of soda ; 

 XIX., no fertilizer ; XX., nitrate of soda, S. Car. rock, sulfate 

 of potash. 



greater amount in the plant than in those plants not so fertilized, 

 except in case of No. XVI., which for some unknown reason ranks 

 highest. 



"In sample XVIII. there seems to be evidence of a partial 

 replacement of potash by soda. 



' ' The same result seems to follow from a comparison of samples 

 VIII. and XX. In the former when sulfate of potash was used 



