140 MAINE AGRICULTURAL EXP^RIMEJNT STATION. I905. 

 PHOSPHATE POWDERS. 



7010. Boston Baking Powder, made by Boston Baking Pow- 

 der Co., Boston, Mass. Purchased from W. L. Wilson & Co., 

 Portland, April, 1905. In tm. Price per can 10 cents. Cost 

 per ounce i . 3 cents. The label did not state the nature of the 

 acid salt. The company write that all goods hereafter sent into 

 the State will bear their formula. It is a straight phosphate 

 powder. 



7015. Horsford's Self Raising Bread Preparation, made by 

 Rumford Chemical Works, Providence, R. I. Purchased from 

 W. L. Wilson & Co., Portland, April, 1905. In paper. Price 

 per package 20 cents. Cost per ounce i . 7 cents. The label 

 states that it is a phosphate powder. The acid salt is correctly 

 named. 



7008. Rumford Baking Poivder, made by Rumford Chemical 

 Works, Providence, R. I. Purchased from A. A. Gilbert, 

 Orono, March, 1905. In tin. Price per can 25 cents. Cost 

 per ounce 3 . i cents. " A strictly pure phosphate powder." 

 The acid salt is correctly named. 



ALUM POWDER. 



7031. /. C. Grant's Bon Bon Baking Powder, made by J. C. 

 Grant Chemical Co., East St. Louis, 111. Purchased from John 

 F. Hannaway, Biddeford, April, 1905. In tin. Price per can 

 10 cents. Cost per ounce .7 cents. The label states that the 

 powder is made from " double sulphate of sodium and alum- 

 inum." The claim that it is an alum powder is correct. 



PHOSPHATE-ALUM POWDERS. 



7030. Biskit Baking Powder, made by Biskit Baking Powder 

 Company, Boston, Mass. Purchased from J. L. Sullivan and 

 Sons, Biddeford, April, 1905. In tin. Price per can 10 cents. 

 Cost per ounce 2 . 5 cents. The label states that the powder con- 

 tains calcium phosphate and alumina sulphate. The acid salts 

 are correctly named. 



7013. Davis 0. K. Baking Powder, made by R. B. Davis, 

 New York, and Hoboken, N. J. Purchased from F. E. Plum- 

 mer, Portland, April, 1905. In tin. Price per can 20 cents. Cost 

 per ounce 2 . 6 cents. The label on this can did not state the acid 



