10 



817"819t I- Received from South Carver, Mass. 

 II. Received from Truro, Mass. 

 III. Received from Fitcliburg, Mass. 



Moisture at 100° C, 

 Total Phosphoric acid. 

 Potassium oxide, 

 Calcium oxide. 

 Nitrogen, 



820-821. I- Peat, received from Coucord, Mass. 



II. Soot, leceived from North Grafton, Mass. 



Moisture at 100° C, 

 Total Phosphoric acid, 

 Potassium oxide, 

 Calcium oxide, 

 Nitrogen, 

 Insoluble matter, 



sludgp:. 

 822-826. 



I. Unpressed sludge, bottom of basin, received from Worcester. 



II. Unpressed sludge, top of basin, received from Worcester. 



III. Pressed sludge, yellowish color, received from Worcester. 



IV. Pressed sludge, black color, received from Worcester. 



V. Pressed shidge, reddish color, received from Worcester. 



Moisture at 100° C, 

 Nitrogen, 



827-828. 



I. Complete average analysis of the above five samples of sUidge. 

 II. Sludge, from Brockton filter beds, received from South Kaston. 



*Not determined. 



