4^ BULLETIN 169, U. S. DE^BTMEIST OF AGRICULTURE. 
Effects of Certain Pigments of Linseed Oil. with Xote on Manganese Content of Raw 
Linseed Oil. (Bureau of Chemistry Circular 111.) Price 5 cents. 
Studies Upon Keeping Qualities of Butter: 1. Canned Butter. ('Bureau of Animal 
Industry Bulletin 57.) Price 5 cents. 
Chemical and Physical Study of Large, and Small Fat Globules in Cow's Milk. (Bureau 
of Animal Industry Bulletin 111.) Price 5 cents. 
Manufacture of Butter for Storage. (Bureau of Animal Industry Bulletin 148.) Price 
5 cents. 
Normal Composition of American Creamery Butter. Bureau of Animal Industry 
Bulletin 149. 1 Price 5 cents. 
Practical Method for Detection of Beef Fat in Lard. (Bureau of Animal Industry 
Circular 132.) Price 5 cents. 
New Method for Determining Fat and Salt in Butter. Especially Adapted for l~se in 
Creameries. (Bureau of Animal Industry Circular 202.) Price 5 cents. 
Wild Volatile-Oil Plants and Their Economic Importance, f Bureau of Plant Industry 
Bulletin 235.) Price 5 cents. 
Utilization of Waste Raisin Seeds. Bureau of Plant Industry Bulletin 276. Price 
5 cents. 
Peanut Butter. (Bureau of Plant Industry Circular 98.) Price 5 cents. 
Chinese Wood-Oil Tree. Bureau of Plant Industry Circular 108.) Price 5 cents. 
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