1895.] 



PUBLIC DOCUMENT — No. 33. 



387 



6. INIlSCELLANEOUS ANALYSES. 



Cooking Soda. 



[Sent on from South Acton, Mass.] 



Per Cent. 



Total carbonic acid, 48.25 



Available carbonic acid, 15.25 



Sulphui-ic acid, ,31 



Hydrochloric acid, .23 



Insoluble matter, Trace. 



Baking Powder. 



[Sent on from North Amherst, Mass.] 



Per Cent. 



Available carbonic acid, 8.40 



Aluminic oxide, 3.49 



Phosphoric acid, 4.76 



Ammonia, .75 



Sulphuric acid, 5.41 



Calcium oxide, 6,08 



Soil Deposit. 



[Sent on from Shirley, Mass.] 



Per Cent. 



Moisture at 100<^ C, 6.13 



Calcium oxide, .38 



Ferric and aluminic oxides, ,79 



Potassium oxide, ,18 



Phosphoric acid, .04 



Insoluble matter, 83.18 



