Moisture at 100*^ C, 

 Potassium oxide, 

 Total pliosplioric acid, 

 Available phosphoric acid, 

 Insoluble phosphoric acid. 

 Nitrogen, 



212-216. I- Received from Spencer, Mass. 



II. Received from Springfield, Mass. 

 III. Received from Westboro', Mass. 

 IV, V. Alkali Nitrate Phosphate received from Hopkinton, 

 Mass. 



Moisture at 100° C, 



Potassium oxide, 



Sodium oxide. 



Total phos[)horic acid, 



Available phosphoric acid. 



Insoluble phosphoric acid. 



Nitrogen, 



217-218. I- Carbonate of lime received from Springfield, Mass. 

 II. Plaster received from Springfield, Mass. 



Per cent. 



I. II. 



Moisture at 100"= C, .47 13.88 



Calcium oxide,* 52.98 32.89 



Sulphuric acid, .312 41.22 



*Carbonic acid not deteruiinecl. 

 fXot determined. 



All parcels containing samples of fertilizers for exa,mination must 

 have exjrress charges irrepaid ; they may he addressed to C. A. Goess- 

 man7i, Hatch Experiment Station, Amherst, Mass. To avoid mistakes 

 and delay, notice shoidd also he given hy pjostal card, that a package 

 has been sent by express and the oivner's name should be stated inside 

 or outside of the pjackages. 



