1917] DAIBY FARMING DAIRYING. 573 



mares to appreciate fully the value of sound pure-bred sires of desirable con- 

 formation. A brief review is made of the requirements and effects of laws 

 regulating the public service of stallions and jacks in the various States. The 

 first of these laws was that of Wisconsin which became effective on January ], 

 1906, since when 20 additional States have enacted legislation of similar 

 character. 



Latest available statistics from 18 of these States are tabulated. Of the 

 55,553 stallions licensed for public service in the.se States 59 per cent are pure- 

 bred, 33 grade, and 8 cross-bred and mongrel. It is noted that since the be- 

 ginning of stallion legislation in these States there has been a general in- 

 crease in pure-bred stallions and a decrease of grades and mongi-els. 



A list is given of the various State stallion registration boards or commis- 

 sions. 



The poultryman's problems in 1917, H. R. Lewis {New Jersey Stas. Ilints 

 to Poultrijmen, 5 {1917), No. 9, pp. 4)- — The importance of the production of 

 infertile eggs for market is emphasized and suggestions are given for the 

 systematic ciilling of layers, compounding war-time rations, and caponlzlng. 



The Thanksgiving turkey, A. S. Weiant {U. S. Dept. Agr. Yearbook 1916, 

 pp. Jfll-Itl9, pis. 3). — This is a brief review of the market turkey industry in 

 this country, including methods of raising, marketing, killing and dressing, and 

 shipping. 



Fur farming as a side line, N. Deabboen {U. S. Dept. Agr, Yearbook 1916, 

 pp. 4^9-506, pis. 2). — It is stated that the solution of the problem of obtaining 

 from a waning source the necessary stock for the permanent development of 

 the fur industry is to " domesticate the fur bearers and farm them, as has been 

 done over and over with other animals. Tlie killing pressure on those remain- 

 ing in the wild state will then be reduced, the fur trade supported, and a new 

 farm product developed." Of about a doxen kinds of fur-bearing animals native 

 to North America which are considered to be suitable for domestication, the 

 skunk, mink, and silver fox have already been bred successfully in captivity 

 in widely scattered localities, and the marten, fisher, otter, blue fox, raccoon, 

 and beaver have been partially tested under domesticated conditions. 



The habits and climatic conditions suitable for the raising of fur-bearing ani- 

 cals are noted, and directions are given for the choice of species, construction of 

 inclosures, feeding, breeding, treatment of diseases, care of skins, and the 

 dressing of furs. The cooperation of breeders of fur-bearing animals is 

 strongly urged. 



A critique of the theory of evolution, T. H. Morgan (Princeton: Princeton 

 University Press, 1916. pp. X-{-197, figs. 95). — This is a series of lectures deliv- 

 ered at Princeton University, in which the author (1) attempts to put a new 

 valuation on the traditional evidence for evolution, (2) deals with the most 

 recent work on heredity, (3) examines in the light of new observations the 

 physical basis of heredity and the composition of the germ plasm stream, and 

 (4) develops the thesis that chance variation, combined with a property of liv- 

 ing things to manifold themselves is the keynote of modern evolutionary 

 thought. 



DAIRY FARMING—DAIRYING. 



An experiment in community dairying, R. R. Welch {U. S. Dept. Agr. 

 Yearbook 1916, pp. 209-216, pi. 1, flg. 1). — An account is given of an experiment 

 conducted by the Dairy Division in developing community dairying at Algona, 

 Iowa, in a region where most of the farmers were engaged in grain farming and 

 stock raising, dairying being only a side line. During the five years of the 



