BAKING POWDERS. 609 



PERCENTAGE COMPOSITION. 



Total carbonic acid, CO 2 8.34 



Sodium oxide, Na 2 O 1 12.25 



Aluminium oxide, Al^Os 3.57 



Calcium oxide, CaO 1.80 



Phosphoric acid, PjO 5 5.60 



Sulphuric acid, SO 3 9.79 



Ammonia, NH 3 .86 



Starch 40.91 



Water of combination and association by difference 16. 88 



100. 00 



PROBABLE PERCENTAGE COMBINATION. 



Sodium bicarbonate, NaHCO 3 15.92 



(Residual sodium oxide, Na. 2 O) 6. 38 



Ammonia alum, anhydrous: 



A1 2 (SO 4 ) 3 11.89 



(NH 4 ) 2 SO 4 2.42 



NH 3 24 



14. 55 



Acid phosphate of lime, anhydrous: 



Ca 3 (PO 4 )i 3.32 



H 3 PO 4 5.63 



8. 95 



Starch..-. 40.91 



Wate^of association (phosphate) and crystallization (alum) 13. 29 



100.00 



5511. Mason's Yeast-Powder. 

 [Made by the Dlxon Yeast- Powder Company, 231 Seventh street S. W., Washington, D. C.J 



Available carbonic acid per cent.. 9.96 



Cubic inches per ounce of po,wder at 212 F 119.6 



PERCENTAGE COMPOSITION. 



Total carbonic acid, C0 2 10.66 



Sodium oxide, Na 2 O 12.58 



Aluminium oxide, Al 2 Os 4.27 



Calcium oxide, CaO 1. 17 



Phosphoric acid, P 2 0s 3. 58 



Sulphuric acid, SO 3 11.02 



Ammonia, NH 3 1.04 



Starch 43.83 



Water of combination and associations by differences 11.85 



100. 00 



