10 



V. INFANT AND INVALID FOODS. 

 No methods have been proposed under this section. 

 VI. SACCHARINE PRODUCTS. 



[Note by the Editor. On page 48, under u ll. Determination of 

 Cane Sugar," Clerget's formula there given should be changed to con- 

 form with the change made by the association under fruit products 



1 00 ( T* 1\ 



(see page 16 of this circular), i. e., S- H 



142.66 -i 



Twentieth. Convention, 1903, Bui. 81, Cir. 13. 



On page 48, under "12. Determination of Commercial Glucose in 

 Molasses, Sirups, and Honey," make the following changes: 



At the end of the second paragraph insert the sentence: u Express 

 results in terms of commercial glucose polarizing at 175. " 



Cancel the third paragraph and substitute the following: 



In honey, which is composed largely of invert sugar, much more accurate results 

 are attained by polarizing at a temperature of 87 in a water- jacketed tube an 

 inverted, half-normal solution of the sample prepared as follows: Weigh out one-half 

 the normal weight of the sample (13 grams) in a 100 cc graduated flask, dissolve 

 in about 70 cc of water, and add 7 cc of concentrated hydrochloric acid; then heat 

 to 68 C. and cool in the usual manner. After inversion, add a few drops of 

 phenolphthalein and enough sodium hydroxid to neutralize. Discharge the pink 

 color with a few drops of dilute hydrochloric acid, cool again, add from 5 to 10 cc of 

 alumina cream, and make up to the mark. Multiply by 2 the reading at 87 in the 

 200 mg tube; divide the result by the factor 163 to express the glucose in terms of 

 glucose polarizing at 175. 



Strike out foot note " b," fourth paragraph. 



Twenty-second Convention, 1905, Bui. 99, Cir. 26. 



The methods for the examination of maple products proposed by 

 Hortvet were adopted as provisional. (See Circular 23, Bureau of 

 Chemistry, for the full text of these methods.) 



ERRATUM. 



On page 48, under heading " 12," fifth and six lines, for "50 C" 

 and " 65 C " read " 50 V." and " 65 V." 



VII. CANNED VEGETABLES. 



No changes authorized. 



VIII. COCOA AND ITS PREPARATIONS. 







In 1903 Mr. E..N. Eaton, associate referee, recommended for adop- 

 tion certain methods (Winton, Silverman, and Bailey, Kept. Conn. 

 Agr. Exper. Stat., 1902, pt. 3, p. 248) for the examination of cocoa 



