ANIMAL PRODUCTION. 



71 



Concerning' the occurrence of erepsin in feces, F. Frank and A. Schitten- 

 HELM (Zciitl)l. (Irfidiii. I'hy^idJ. ii. Pnth. SloffivrchMls, n. ser., Jf (ID09), No. 23, 

 pp. 881, 882). — According to the authors' investigations, tlie feces contain 

 erepsin or, at any rate, a ferment which has the same properties. 



Prog-ress in nutrition, 1908—9, C. F. Langworthy {Jour. Home. Econ., 2 

 (1910), No. 1, pp. 35-72). — A digest of data with special reference to worli 

 reported in the United States and Canada. 



ANIMAL PRODUCTION. 



Digestion experiments with native forage plants, S. C. Dinsmore (Nevada 

 Stn. Bill. 66. pp. .J7-.JS. pi. 1). — Chemical analyses and digestion experiments 

 were made with the French pea, hairy vetch, willows, and different varieties 

 of alfalfa grown from seed which was obtained from Ecuador, Arabia, Arizona, 

 Texas, Montana, and Mexico. The digestion coefficients obtained with sheep 

 are given in the following table : 



Average dige-^tion coefficients of alfalfa and other forage plants. 



Kind of plant. 



Dry 



matter. 



Nitrogen- 

 free ex- 

 tract. 



Fiber. 



Alfalfa (Ecuador) 



Alfalfa (Arabia) 



Alfalfa ( Arizona) 



Alfalfa (Texas) 



A Ifalfa ( Montana) 



Alfalfa 'Mexico) 



French pea (LathjTUs) . . . 

 Hairy vetch ( \'icia lillosa) 

 Willows {Salix cxigua) 



Per cent. 

 64.55 

 64.93 

 66.75 

 64.37 

 68.42 

 61.90 

 67.72 

 61.47 

 53.66 



Per cent. 

 83.57 

 77. 73 

 83.79 

 82.43 

 84.53 

 80.68 

 81.91 

 70.52 

 29.04 



Per cent. 

 62.16 

 47.08 

 56.84 

 56. 89 

 04.99 

 61.42 

 59.14 

 .56. 65 

 69.88 



Per cent. 

 69.98 

 61.44 

 78.60 

 75.83 

 72.93 

 75.85 

 75.49 

 65.21 

 66.40 



Per cent. 

 45.23 

 41.81 

 36. 57 

 36.86 

 58.28 

 19.35 

 49.42 

 54.03 

 41.73 



Per 



cent. 

 60.74 

 53.20 

 53.16 

 46.70 

 52.04 

 49.05 

 67.17 

 62.85 

 32.22 



The results of chemical analyses of partially dried native forage plants were 

 as follows : 



Chemical eomposilion of partially dried native forage plants. 



Kind of plant. 



Shad scale {Atriplfx cancsctm) 



Sand bunch gra.ss ( Eriocoma cuspidata). . 

 False buckwheat { Eriogonum h(crmani). 

 Spring.salt brii.sh (Alriplerconfcrli/olia). . 



Rabbit bru.sh (Chripothamum) 



Small rabbit brush ( ( iutU rnzia divaricala) 



Hop .sage ( Grayia polygaloides) 



AVild barley ( koracum nodosum) 



Poa nrmdcjuns 



Astragalus mortoni 



Protein. 



P-er cent. 

 6.60 

 6.41 

 6.70 

 6.59 

 7.36 

 6.41 

 7.94 

 .82 

 6.46 

 7.23 



Per cent. 



14.50 

 9.93 

 9.81 

 7.25 

 5. .37 

 6.56 



18.62 



1.5.50 

 7.69 



20.44 



Fat. 



Nitrogen- 

 free ex- 

 tract. 



Per cent. 

 2.99 

 3.01 

 7.14 

 2.94 

 12. 38 

 5.49 

 4.18 

 4.03 

 2.83 

 8.77 



Per cent. 

 39.60 

 36.45 

 46.56 

 5.74 

 42. 98 

 43.27 

 46.57 

 46.74 

 42.64 

 36.40 



Fiber. 



Per cent. 

 18.50 

 34.02 

 22.98 

 57.76 

 26. 40 

 31.18 

 12. 68 

 25.09 

 34.51 

 18.61 



Ash. 



Per cent. 

 17.41 

 10.18 



19.72 

 5.51 

 7.09 



10.01 

 7.82 

 5.87 

 8.55 



Digestion experiments on the ran^e, P. R. Kennedy and S. C. Dinsmore 

 (Nevada Sta. Bui. 77, pp. 1-38, pis. 16). — Digestion experiments were made on 

 the range with a number of native forage plants of the Truckee Valley. 

 Analyses of these plants are also reported and they are illustrated and briefly 

 described. 



47147°— No. 1—10- 



-G 



