292 EXPERIMENT STATION RECORD. [Vol.40 



Nation.il Forests. An appendix giving engineering data on the development of 

 water power, „the calculation of the speed of saws, pulleys, and drums, and on 

 saw gauges, and a list of mill-machinery and lumber terms are included. 



Housing farm poultry, A. G. Philips (Indiana Sta. Circ. 84 (191S), pp. 12. 

 figs. 13). — The principles underlying the proper location, arrangement, and 

 construction of poultry houses are explained and illustrated with drawings 

 showing working models for houses to accommodate 65 and 100 fowls. These 

 models can be lengthened and widened to meet any desired capacity. 



RURAL ECONOMICS. 



Country life and rural problems, Mary K. Reely (New York: The II. W. 

 Wilson Co., 1918, pp. 39). — This is a study outline of some of the social prob- 

 lems of the country community, grouped under five main heads — the farm home, 

 rural school, country church, community life, and country town. Suggestive 

 topics for discussion and a bibliography are given under each head, together 

 with a general supplementary list of 23 books. 



The cost of crop production in Ohio, C. E. Thorne {Mo. Bui. Ohio Sta., 3 

 {1918), No. 11, pp. 337-3.',S).— This article is based upon figures from the U. S. 

 Census of 1910 and other official sources and upon the author's estimates. 



Figures from Bulletin 2CG, previously noted (E. S. R., 32, p. 135) show the 

 average employment in the field of man labor and horse labor in the production 

 and harvesting of an acre of corn. Similar tables based upon common expe- 

 rience show that the estimated field labor expended in the production of an 

 acre of wheat is 27 hours of man labor and 38 hours of horse labor, and that 

 of an acre of hay crops, 17 hours of man labor and 26 hours of horse labor. 

 The estimate of total field labor employed in crop production on the average 

 Ohio farm, which, according to the census of 1910, consists of 88J acres, gives 

 a total of 1,429 hours of man labor and 1.S06 hours of horse labor expended. 



The author notes such items as overhead cost; weather hindrance; cost of 

 horse labor; cost of implements and machinery; fertilizers; average yields of 

 principal crops for the 10 years, 1906 to 1915, inclusive, and average farm 

 prices by U. S. Department of Agriculture estimates for the same period and 

 by the scale of estimated average prices for 1918 ; land rental ; and labor's share. 

 Setting aside one-third of the crop for rental of the land and computing man 

 labor at 15 cts. an hour at the lower rate and 25 cts. at the higher, and horse 

 labor at 10 and 15 cts., respectively, and adding 50 per cent to the man hours 

 for corn loss through unavoidable hindrance, the average cost of producing a 

 bushel of corn in 1918 reaches $1.10, that of wheat $1.86, oats 79 cts., and of a 

 ton of hay $14.07, as compared with 61 cts., $1.04, 48 cts., and $8.40, respectively, 

 the cost per bushel or ton of producing these crops in the 10-year period 1906- 

 1915. At the average rate of 35 cts. an hour for man labor, the cost of produc- 

 ing wheat reaches $2.12 a bushel for the average Ohio yield of 15 bu. over the 

 seed sown ; the cost of corn likewise $1.30. 



The calculations in this study indicate that the Ohio farmer owning his farm, 

 the land and equipment having been purchased before the war, may receive 

 about 6 per cent on his original investment and a salary of $800 to $1,000. The 

 salary of the tenant farmer may be much less than that. 



Producing family and farm supplies on the cotton farm, C. L. Goodrich 

 (U. S. Dept. Agr., Fanyiers' Bui. 1015 (1919), pp. 16).— The author uses data 

 from Bulletins 648, previously noted (E. S. R., 39. p. 293), and 410, previously 

 noted (E. S. R.. 36, p. 289). In the first of these it is shown that on 106 farms 

 In Brooks County, Ga., the families in 1914 consumed food averaging in value 



