No. 1, February, 1921] 



AGRONOMY 



31. Hanly, Joseph. Some notes on crop rotations. Jour. Dept. Agric. Ireland 20: 184- 

 189. 1920. — Discusses crop rotation in regard to its historical development, its advantages, 

 and the types practiced in Ireland. — Donald Folsom. 



32. Harlan, Harry V. Smooth-awned barleys. Jour. Amer. Soc. Agron. 12:205-208. 

 1920. — A report on the introduction of smooth-awned barley and the progress that has been 

 made. It is predicted that a high-yielding smooth-awned barley will be developed. — F. M. 

 Schertz. 



33. Harshberger, Johx W. Text-book of pastoral and agricultural botany for the study 

 of the injurious and useful plants of coimtry and farm, ix + 294 p., 1 pL, 120 fig. P. Blakis- 

 ton's Sons and Co. : Philadelphia, 1920. — This book is based on a course in botany given to 

 veterinary students in the University of Pennsylvania. Nine chapters are devoted to pois- 

 oning by plants, one to feeds and feeding, three to grasses, three to legimies, one to weeds, 

 and one to agricultural seeds. — C. V. Piper. 



34. Maidex, J. H. Chats about the prickly pear. No. 5. Agric. Gaz. New South Wales 

 31:557-562. 1920. — Mainly extracts from well-known bulletins by two American authors, 

 Hare and Griffiths, on value and methods relative to Opuntia spp. as feed for live stock. — 

 L. R. Waldron. 



35. Maughan, Howard J. Factors affecting the depth of planting various crops. 

 (Abstract.) Utah Acad. Sci. 1 : 20fr-207. 1918. 



36. McCauley, C. Sudan grass in western districts. At Cowra experiment farm. Agric. 

 Gaz. New South Wales 31: 473-475. 1920.— Detailed financial statement is given of results 

 from 20 acres of this grass, showing it to have been very profitable. An analysis of Sudan- 

 grass silage is given. — L. R. Waldron. 



37. MooMAW, Leroy. Report for the Dickinson substation for 1919. North Dakota 

 Agric. Exp. Sta. Bull. 138. 24 p., 6 fig. 1920.— Weather data relative to temperature, precip- 

 itation, wind velocity, and length of growing season are presented, as well as annual and 

 average yields of different varieties of various crops. In an excessively dry season following 

 two dry seasons Russian thistle {Salsola kali iragiis)pToduced 5.7 tons per acre of air-dry 

 material (hay). — L. R. Waldron. 



38. Moore, C. C. Technic of potato starch manufacture. 

 22-23; 31: 8, 9, 20, 22-23. 1920. 



Potato Mag. 2'^: 10, 11, 20, 



39. MoREiLLOx, M. Influence de I'ombrage sur la valeur des gazons dans les pSturages 

 boises. [The influence of shade upon the value of the grasses in wooded pastures.] Jour. 

 Forest. Suisse 70: 131-142. 1919. — A discussion of Swiss alpine meadows at altitudes from 

 1100 to 1650 meters. As a result of the shade of trees in these alpine pastures, there is not 

 only a reduction in the percentage of good forage plants but also in the quantity of fodder 

 harvested. Under spruce the loss in dry fodder is 88 per cent by weight and under larch 

 at the same station from 30 to 45 per cent of that in open ground. The shade is also injurious 

 to the qualitative value of the fodder. In Zurich and Grisons the following figures were 

 obtained. 



