228 



Bulletin 132. 



The report of George W. Cavar.aiigh, 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 celerj?- 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 : XV III. , 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 fellow from a comparison of samples 

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



