520-524. I- Received from Concord, Mass. 



II. Received from Concord, Mass. 



III. Received from Concord, Mass. 



IV. Received from Concord, Mass. 

 V. Received from Concord, Mass. 



Moisture at 100" C. 

 Potassium oxide, 

 Phosphoric acid. 

 Calcium oxide. 

 Insoluble matter. 



9.79 10.55 8.52 11.06 13.04 



525-529. I- Received from Concord, Mass. 



II. Received from East Northfield, Mass. 



III. Received from East Leverett, Mass. 



IV. Received from North Hatfield, Mass. 

 V. Received from North Hatfield, Mass. 



Moisture at 100^ C, 

 Potassium oxide. 

 Phosphoric acid. 

 Calcium oxide, 

 Insoluble matter. 



530-533. I- Received from Bedford, Mass. 



II. Received from Sunderland, Mass. 



III. Received from Boston, Mass. 



IV. Received from East Medway, Mass. 



Moisture at 100^ C. 

 Potassium oxide. 

 Phosphoric acid. 

 Calcium oxide, . 

 Insoluble matter, 



* Not determined. 



