630-633. No's v., VI., VII. and VIII. received from Amherst, 

 Mass. 



434. I- Sewage received from Concord, Mass. 



Per Cent. 

 I. 



Moisture at 100° C, 99.80 



Solid residue, .20 



Nitrogen, .30 



Nitrogen as nitrates and albuminoids, .27 

 Nitrogen as ammonia, .03 



Chlorine, .033 



*!Not determined. 



