6 AGRONOMY [Box. Absts., Vol. VII, 



In a pasture with spruce trees 20 meters apart the forage will lose 60 per cent in weight and 

 30 per cent in quality; its end value is therefore but 20 per cent of the end value of forage 

 grown in full sunlight. In conclusion, specific recommendations are presented for improving 

 the management and administration of Swiss alpine pastures.— C. /. Kraebel. 



40. Murray, J. Alan. The classification of cattle foods. [Abstract.] Rept. British 

 Assoc. Adv. Sci. 1919:383. 1920. 



41. Oldershaw, a. W. The value of lupines in the cultivation of poor light land. 

 [Abstract.] Rept. British Assoc. Adv. Sci. 1919: 380-381. 1920. 



42. Pitt, J. M. Farmers' experiment plots. 1919-20. Central Coast. Agric. Gaz. New 

 South Wales 31: 539-547. 1920. — Experiments included variety trials, fertilizer trials, and 

 size of seed piece, depth and rate of planting. — L. R. Waldron. 



43. Porter, W. R. Thirteenth and fourteenth annual report of the state demonstration 

 farms 1918 and 1919. North Dakota Agric. Exp. Sta. Bull. 135. 84 p., 1 fig. 1920.— Detailed 

 results are given from 22 farms, including cost of production; a summary of results for 10 years 

 is presented for 9 of the farms. Wheat has yielded 16.9 bushels per acre for 14 years, which is 

 54 per cent higher than the state average for the same period. — L. R. Waldron. 



44. Pratt, Hiram E. Report of work at Kodiak live stock and breeding station. Rept. 

 Alaska Agric. Exp. Sta. 1917: 72-81. 1919. — Reports on field and forage crops grown at the 

 station. Twelve varieties of potato were tested. The following native plants were used 

 for silage, beach rye (Elymus mollis), beach sedge {Car ex cryptocarpa) , bluetop {Calama- 

 grostis langsdorffi) , and fireweed {Epilobium angustifolium) . These do not stand continual 

 cutting well, but the yield is maintained if cutting is done only in alternate years. Native 

 bluetop is the chief hay grass; but coarse bluegrass (Poa glumaris), Kentucky bluegrass 

 {Poa pratensis), and wild barley (Hordeum horeale) occur mixed with bluetop, and make 

 good hay. Analyses of Calamagrostis langsdorffi,, Carex cryptocarpa, and Elymus mollis 

 are given and compared with such standard grasses as Poa pratensis, Agrostis alba, and 

 Phleum pratense. — J. P. Anderson. 



45. Pridham, J. T. The selection of promising wheat plants. Agric. Gaz. New South 

 Wales 31: 548. 1920.— See Bot. Absts. 7, Entry 234. 



46. Ramsay, A. A. Sorghum as a possible source of industrial alcohol. Agric. Gaz. New 

 South Wales 31:479-484. 1920. — Experiments were conducted at Hawkesbury Agricultural 

 College with different varieties of sorghum. Results are given in detail of the field data, 

 percentage of juice expressed, its analysis, amount of alcohol produced, and composition of 

 megass. It was found for most varieties that the market value of the alcohol obtained would 

 not pay for the cost of cutting and transporting the cane to the factory. Even with the 

 best variety the margin was only about Is. per ton. Production of alcohol in this manner 

 can not be considered a feasible undertaking. — L. R. Waldron. 



47. Reed, George M. Varietal resistance and susceptibility of oats to powdery mildew, 

 crown rust, and smuts. Missouri Agric. Exp. Sta. Res. Bull. 37. 3-41. 1920. 



48. Roberts, George, and A. E. Ewan. I. Report on soil experiment fields. II. 

 Maintenance of fertility. Kentucky Agric. Exp. Sta. Bull. 228:89-131. 1920.— See Bot. 

 Absts. 7, Entry 463. 



49. Round, Lester A. Experiments with potato silage. Potato Mag. 3^:6-7, 29-31. 

 2 fig. 1920. 



