505-509. I- Received from Concord, Mass. 



II. Received from South Acton, Mass. 



III. Received from Topsfield, Mass. 



IV. Received from South Amherst, Mass. 

 V. Received from Concord, Mass. 



Moisture at 100° C. 

 Potassium oxide, 

 Phosphoric acid, 

 Calcium oxide, 

 Insoluble matter. 



510-514. I- Received from South Acton, Mass. 



II. Received from South Acton, Mass. 



III. Received from Concord, Mass. 



IV. Received from Concord, Mass. 

 V. Received from Wilbraham, Mass. 



Moisture at 100« C. 

 Potassium oxide. 

 Phosphoric acid, 

 Calcium oxide. 

 Insoluble matter, 



515-519. I- Received from Concord, Mass. 



II. Received from Shirley, Mass. 



III. Received from Concord, Mass. 



IV. Received from Sunderland, Mass. 

 V. Received from South Acton, Mass. 



Moisture at 100« C, 

 Potassium oxide, 

 Phosphoric acid. 

 Calcium oxide. 

 Insoluble matter, 



