VI CONTENTS. tVol. 43 



ANIMAL PRODUCTION. 



Page. 



The tabulation of factorial values, Zeleny . ^"S 



The inheritance of congenital cataract in cattle, Detlefsen and Yapp 669 



Hereditary cataract in calves, Small 6G'.J 



The inheritance of coat color in Great Danes, Little and .Jones 669 



A note on tlie origin of piebald spotting in dogs, Little 609 



Is there linliage between genes for yellow and for black in mice? Little — 669 



Experiments on sex determination, Copenian 670 



Studies on the cells of cattle, Wodsedalelj 670 



The spermatogenesis of domestic mammals, I, II, Masui 670 



The digestibility of feeds containing cellulose, Waentig and Gierisch 670 



Kudzu feeding experiments, Kidder 670 



Pasture trials, Thompson 671 



Broom millet seed as feed for stock, Wenholz 671 



Fish meal as stock food 67 i 



Sugar in oat straw and cattle foods, Collins and Spiller 671 



Feeds with public formulas. Savage 671 



Analyses of feeding stuffs and registrations for 1920, Cathcart 671 



Inspection of commercial feeds, Wessels 672 



Twenty-third convention of American National Live Stock Association — 672 



Loss of weight by live stock during transportation, Kuppelmayr 672 



Cattle feeding [at North Platte substation] 672 



Value of elevator screenings in the ration, Hayter 672 



A defect of hair and teeth in cattle, probably hereditary, Cole 672 



Cattle in the [South African] Union. — The trade in beef 67.3 



Managing sheep on North Dakota farms, LaGrange 673 



A suggested plan for marketing Kentucky wool, Humphrey 673 



[Hog grazing in Louisiana], Kidder and Cain 673 



[Hog feeding trials at the Scottsbluff Substation] 673 



Buying hog feeds cooperatively, Ashby 673 



The Chinese hog and Poland Chinas, Yao 673 



Kansas State Live Stock Registry Board, Bell 674 



[Suntiower silage and frozen tlsh for] poultry, Thompson 674 



The value of soy bean meal as a feed for chicks, Kaupp 674 



Feed required to produce a dozen eggs by hens of different breeds, Kaupp^ 674 



Breeding for egg production. Burgess 674 



Egg-laying tests at Hawkesbury College, Harvey and Hadlington 674 



Studies on the inheritance of egg-weight, I, Hadley and Caldwell 674 



Methods of pedigree breeding at the Government Poultry Farm, Slocum 67.5 



Culling equipment, Mr. and Mrs. G. R. Shoup 675 



Relative position of yolks in eggs not turned for three weeks, Kaupp 675 



The rate of growth of Single Comb White Leghoi'n chicks, Kaupp 675 



Poultry [experiments at the Nebraska Station] 675 



Poultry culture in Maine, past, present and future, Coffin 676 



Canadian farm poultry, JuU 676 



Export of South African eggs and poultry, year 1919, John 676 



Concerning rabbits, Arms 676 



DAIEY FARMING — DATBYING. 



Studies in milk secretion.— V, Variations with age, Gowen 676 



The variation of milk secretion with age in Jersey cattle, Gowen 677 



Rules for testing cows for advanced registration, Fitch and Atkeson 677 



Sunflower silage 677 



Wild sunflowers for silage. Fitch 677 



Silage crops [at the Scottsbluff Substation] 677 



Factors involved in producing milk in North Carolina, Combs and Bain__ 678 



Requirements and cost of producing milk in Indiana, Bain and Posson 678 



Production of clean milk and cream for industrial purposes, Postma 679 



Milking machines : V, High grade milk under farm conditions, Bright 679 



Observation on milking luachine, Thompson 679 



The straining cloth and bacterial contamination, Ashworth and Landoiu- 679 



Number of bacteria on the lips of milk bottles, Dearstyne and Ewing 680 



Accuracy of bacterial counts from milk samples, Breed and Stocking 680 



The lactic acid bacteria, .Tensen 680 



Lactic acid production and bacterial growth in souring milk. Baker et al_ 681 



Determination of keeping quality of milk, Cooledge 681 



