1897 THE MICROSCOPE. 15 
upper edge of the slip and hold it firmly in place. Bring 
the short end into the edge of the drop. In a moment, 
chemical decomposition of the nitrate occurs and the pure 
silver in exquisite crystals attaches itself to the copper. 
If the solution is strong enough, the formation will go on 
until the branching, feathery crystals extend quite over 
the space occupied by the drop.— National Druggist. 
NEW PUBLICATIONS. 
The New Monthly Open Court.— With January, 19897, 
the Chicago Open Court celebrates the decennial anniver- 
sary of its nativity, and appears in the form of a monthly 
instead of a weekly. Undoubtedly this change will gain 
more than ever the attention of thoughtful people for 7%e 
Open Court, which is devoted to tha high ideal of purifying 
religion by the methods employed in science,—an aim 
which it has always reverently but fearlessly pursued. 
The January Monist.—Three powerfularticles make up 
the main bulk of the January Monist,—the first on Zhe Logic 
of Relatives, by Mr. Charles S. Peirce, a celebrated Ameri- 
can mathematician and creator of this branch of inquiry, 
the second on Animal Societies, by Dr. Paul Topinard, the 
eminent Parisian anthropologist, and the third on Zhe 
Philosophy of Buddhism, by Dr. Paul Carus, the editor of Zhe 
Monist. 
New York Agricultural Experiment Station.—Bulletin 
No. 110 of the N. Y. Agricultural Experiment Station 
(Geneva) is entitled ‘‘Milk-Fat and Cheese Yield.’ This 
bulletin contains a discussion of results secured in making 
analysis of, the milk of 50 herds of cows, whose milk was 
taken to a cheese-factory. The results form a basis for 
discussing methods of paying for milk for cheese-making. 
The conclusion reached is that payment for milk accord- 
ing to amount of milk-fat furnished is the fairest practica- 
ble method. 
