1910] CONTENTS. Ill 



Page 



Cross-inocnlatiou of legumes, Koch and Butler ' 523 



Potassium requirements of bacteria, Koch 523 



Occurrence, behavior, and origin of smooth-stemmed foxglove, Saunders_ 523 



The purple hyacinth bean. Freeman 523 



The effect of certain organic substances on seed germination, Fred 523 



Action of radium on green plants with and without light, Packard 523 



On the dynamics of photosynthesis, Osterhout and Haas 523 



A method of studying respiration, Osterhout 524 



An indicator method of measuring the consumption of oxygen, Osterhout_ 524 



Comparative studies on respiration, I-V 524 



Analytic and synthetic studies on chlorophyll, Mary 525 



Growth rates in plants, Debatin 525 



Abnormal stem growth of soy beans in sand cultures, McCall et al §25 



Osmotic pressure in plants on mountains, Arrhenius and Soderberg 525 



Materials in sap in different parts of stalk of cane, Kuijper (Kuyper) 525 



Turgescent tissue in sugar solutions and toxic substances, Thoday 525 



Quantity of regeneration in stem of BryopliylUuiv calijcinuni, Loeb 526 



Consideration of pathologic conditions in Ambrosia trifida, Stewart 526 



The nature of charred wood. Boodle 526 



FIELD CROPS. 



American husbandry, a much overlooked publication. Carrier 527 



[Report of field crops work in Florida, 1918], Scott et al 527 



[Report of State and cooperative experiment farms in Wyoming] 528 



[Field crops work at Canada stations and farms, 1917], Grisdale et al 528 



[Report of field crops work in St. Vincent, 1917-18], Watts 528 



[Report of field crops work in British Guiana, 1917], Harrison 528 



[Report of field crops work in Union of South Africa, 1918], Smith et al_ 528 



[Report of field crops work in Burma, 1918], English 528 



[Field crops in Bui"ma], Adamson 529 



[Field crops in Ceylon], Molegode et al 529 



[The progress of crop investigations in India, 1917-18] 529 



[Report of field crops work in South Australia, 1918-19], Spafford 529 



Constructive rotations : Fertility, crops, drainage, and farm labor, Barker_ 529 



The temporary ley, Stapledon 529 



The grasses and grasslands of South Africa, Bews .529 



[Grasses for paper making in the Union of South Africa], Juritz 529 



Methods of selection applied to the cereals, Beauverie 529 



Twinning in alfalfa, Southworth 530 



Variety tests with two-row barley, 1913-1916, Ivei'sen 530 



[Observations on beer barleys in Argentina], D.-Girola 530 



[The castor oil plant in Brazil], d'Utra 530 



Red clover, Findlay 5.30 



Variety tests of corn [in North Carolina], Garren 530 



Son)e curicms freaks of corn, Jones 530 



Description of supposed fossil species of maize from Peru, Knowlton 530 



A fossil ear of maize, Collins 530 



Inheritance of inununity to leaf blister mite in cotton, Harland 530 



Improvement of yield of Sea Island cotton in West Indies, Harland 531 



Improved type of cotton for southern Maratha [India], Kottur .531 



Problems following introduction of American cotton in Punjab, Roberts— 531 



Egyptian cottons: Deterioration and means of remedying it, Mosseri 531 



Cotton, Bigwood .531 



The early history of cotton in Bombay, Mackenna 531 



Work of Imperial Institute in connection with British cotton cultivation_ 531 



Cottonseed by-products 532 



Fiber plant investigations [in South Africa], Holmes-Smith 532 



Production of flax fiber and seed flax in Canada, Robertson 5.32 



Tests with flax varieties, Gordon 532 



The flax industry [in Victoria], Robilliard 532 



Lalang grass as a paper material, Eaton .532 



Official grain standards of the United States for oats, Houston .532 



Handbook official grain standards for oats 532 



The spraying of Irish potatoes, Leiby .532 



Report on the composition of potatoes grown in the United Kingdom 533 



