BUREAU OF CHEMISTRY. 565 



The following tabulations show the nature and number of bacterio- 

 chemical examinations made during the past year of interstate and 

 research samples: 



Interstate samples : 



Antiseptics and disinfectants R 



Butter 6 



Canned goods 14 



CJams (shell) ir> 



Corn meal 5 



Cream (raw and pasteurized) _ 20 



Eggs (desiccated) 36 



Kggs (frozen) ^9 



Eggs (liquid) 3l» 



Eggs (shell) 12 



CSelatin ^ 



Hay 20 



Infant foods and milk powders 14 



Jam and preserves 24 



Milk (raw and pasteurized) 'f)42 



Mincemeat ' 31 



Miscellaneous 25 



Oysters (shell and shucked) 1-16 



Tomato products 324 



Water 47 



Total 1, 373 



Research samples: 



Air analyses 25 



Canned goods IS 



Cheese 10 



Clams (shell) 10 



Disinfectants 21 



Eggs (frozen and desiccated) 73 



Eggs (shell), yolk and albumen 1,440 



Gelatin f»59 



Milk (raw and pasteurized) 12 



Miscellaneous 36 



Oysters (shell and shucked) 132 



Water — 32G 



Total 2,762 



The total number of samples examined bacteriochemically, both 

 interstate and research,' was 4,135. 



SUGAR AND SUGAR PRODUCTS. 



Maple Products. 



The investigation of the maple products industry of the United 

 States, undertaken three years ago, has been continued. The report 

 covering the work on maple sap sirup has been published, while that 

 on maple sugar and maple-sugar sirup has been written and held 

 awaiting further investigations on special features of the industry. 

 The work during the past sugar season showed the necessity of more 

 extended experimental study of the effect of metals on the appearance 

 and composition of the sirup, the changes in composition of maple 

 sugar and sirup in storage, and the elTeet of manufacture from sour 

 sap. As the nuiple season is so short, lasting not more than two weeks 

 to a month, the manufacturer of the samples must be done dunng'that 

 time and analysis nuule later, so that but little apparent progress can 

 be made in one season. 



