772 EXPERIMENT STATION RECORD. [Vol. 38 



With the type of incubator used in these experiments it was found that " if 

 a touching thermometer is used it should be 0.5° higher than a standing, regard- 

 less of color of eggs. If a hanging thermometer is used it should be run on an 

 average of 2° higher than a standing, with a greater difference the first week 

 and a less difference the third week. The Inovo should be run about 2.2° lower 

 than a standing." 



In a minor experiment in connection with one of the main experiments it 

 was found that " a temperature with a standing thermometer of 100.5° the 

 first week, 101.5° the second, and 102.5° the third week compares well in tem- 

 perature and hatching results with a hanging thermometer temperature of 103° 

 for three weeks." 



In an experiment run in duplicate in 1911 with two of the experimental incu- 

 bators and using white eggs, machine No. 1 was controlled by a standing ther- 

 mometer and run at 101, 102, and 103°, respectively, for the three weeks, and 

 machine No. 2 by the Inovo thermometer and run at 100.5° for the three weeks. 

 The average hatching record of machine No. 1 was as follows : Eggs set, 147.5 ; 

 infertile eggs, 9.5; dead germs, 8.5; dead in shell, 27.5; and chicks hatched, 102. 

 For machine No. 2 the corresponding averages were 149, 12, 7.5, 25.5, and 104. 

 In this experiment incubator No. 1 was kept reasonably near the desired tem- 

 peratures by the standing thermometer, the average for the three weeks being 

 102.2°. At the same time the Inovo thermometer in this machine registered 

 08.3° the first week, 99.6° the second, and 101.1° the third, averaging for the 

 whole period 99.6°. In incubator No. 2, controlled by the Inovo thermometer, 

 the temperature registered 100.4° the first week, 100.6° the second week, and 

 100.6° :he third week, averaging for the whole period 100.5°. The standing 

 thermometer in this machine registered 103° the first week, 102.7° the second 

 week, an 1 102.3° the third week. In this test the standing thermometer tempera- 

 tures of tlie two machines varied only 0.5°, but one increased during the hatch- 

 ing period and the other decreased, yet the hatches were similar. The results 

 of this experiment tend to show that 100.5° is not the only temperature de- 

 sirable with an Inovo thermometer. 



The data in connection with these experiments are tabulated and discussed 

 in detail. 



Goose raising, H. M. Lamon and A. R. Lee (U. S. Dept. Agr., Farmers' Bui. 

 161 {1911), pp. 16, figs. 8). — Information is given in reference to the appearance 

 and adaptability of the different breeds of geese, together with details as to 

 breeding, feeding, and marketing. 



DAIRY FARMING— DAIRYING. 



Beport of the dairy husbandry department, O. F. Hunzikeb (Indiana Sta. 

 Rpt. 1916, pp. 29-li0). — In testing rations for milch cows three lots of 5 cows 

 each were fed six rations for ISO days. All the rations contained ground corn 

 and corn silage, and in addition ration 1 contained cottonseed meal and alfalfa 

 hay, ration 2 cottonseed meal and soy-bean hay, ration 3 linseed meal and alfalfa 

 hay, ration 4 linseed meal and soy-bean hay, ration 5 gluten feed and alfalfa 

 hay, and ration 6 gluten feed and soy-bean hay. 



It was found that " a ration used in milk production, which contains ground 

 corn, corn silage, and a leguminous hay requires but a limited amount of 

 protein-carrying concentrates in order that it may be properly balanced. The 

 three protein-carrying concentrates used in this experiment affected the cost of 

 the rations less than any other of the four feeds of which the ration was com- 

 posed. When fed in connection with alfalfa hay, cottonseed meal was the most 

 economical source of protein, gluten feed ranking second and linseed meal 



