790 
Journal of Agricultural Research 
Vol. XXXI, No. 8 
the cows with calf. This difficulty has increased as the experiment 
has progressed, but has been about equally divided between the two 
groups. 
(6) Each group has produced about the same proportion of strong, 
healthy calves. The nonmineral group has had mubh the higher 
proportion of delicate calves, but this is due in part to breed charac¬ 
teristics and should not be taken too seriously. 
(7) It should be borne in mind that this summary is a report of 
progress and should not be considered as final. 
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THE COMMITTEE ON REVISION OF METHODS. REVISED TO NOV. 
L 1919. 417 p., iilus. Washington, D. C. 
(3) Forbes, E. B., Beegle, F. M., Fritz, C. M., Morgan, L. E., and Rhue, 
S. N. 
1915. SPECIFIC EFFECTS OF RATIONS ON THE DEVELOPMENT OF SWINE. 
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(12) -• 
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