828 EXPKRIMENT STATJOX IlECOED. [Vol. 41 



been regarded as independent and genetically distinct from true starcliiness 

 and has been termed pseudo-starchy. 



Crosses of pseudo-starchy and sweet gave indistinctly segregating seed popu- 

 lations in the F2 which showed little response to selection in the next genera- 

 tion, although in subsequent generations the parental patterns were recovered. 

 The pseudo-starchy type was also recovered from the extracted sweet seeds of 

 a cross of pseudo-starchy and true starchy. In both these crosses segregation 

 became more distinct in later generations after the plants had been inbred. 

 Two forms of segregation were observed, one giving a sharp mono-hybrid ratio 

 of opaque and translucent seeds, and the other giving a less definite splitting 

 in a 1 : 1 ratio, responding immediately to selection. 



In interpreting the results the evidence is deemed sufficient to merit the 

 assumption that endosperm and plant factors work together so that reciprocal 

 crosses have slight immediate effect, and that the appearance of the seed in 

 the F2 populations is not closely correlated with their genetic composition and 

 hence with their behavior In later generations. Tentative factorial schemes are 

 employed to illustrate ways by which these conditions may be brought about. 

 It is stated that no evidence was found that imperfect segregation or con- 

 tamination of factors occurred in the separation of the determiners of starchy 

 and sweet endosperms in the original cross, the effects of selection being most 

 logically attributed to the sorting out and rearrangement of hereditary factors. 



[Cotton culture in French, colonial possessions] (Assoc. Coton. Colon. Bui. 

 61 {Id 19), pp. 635-698, fig. 1). — This comprises an account of the industry in 

 French West Africa, New Caledonia, the New Hebrides, Cambodge, Tahiti, and 

 Guadeloupe. 



Cawnpore- American cotton: An account of experiments in its inaprove- 

 ment by pure line selection and of field trials, 1913-1917, B. C. Buet and N. 

 Haidee {Agr. Research Inst. Pusa Bui. 88 {1919), pp. 32, pis. 10, fiy. 1). — Selec- 

 tion work, tests of new imiwrtations, observations on climatic conditions fi-om 

 season to season, and cultural experiments with so-called Cawnpore-American 

 cotton are described. It is stated that the American cotton compares favorably 

 in every respect with " desi " cotton, and that under suitable marketing condi- 

 tions it is much more profitable. 



Report of the Indian Cotton Committee {Calcutta: Govt., 1919, [vols. 1], pp. 

 IX+264; [2] pis. 7). — This comprises a report of the committee appointed by 

 the Governor General to examine into the agricultural and econonuc phases 

 of long staple cotton production in India. 



The first part of the report deals with the cultural problems and the possi- 

 bilities of extending long staple cotton production in each Province. The second 

 part includes a discussion of commercial questions and statistics, the establish- 

 ment of a central cotton trade association in Bombay, and the formation of a 

 central cotton committee to coordinate all work with cotton throughout India. 

 The report is supplemented by two maps of India showing the distribution of 

 the different kinds of cotton by districts and the relative importance of the 

 crop; by irrigation maps of the Punjab, the United Provinces, and of Sind; 

 and by two plans of a model ginning factory. 



Inheritance of certain characters in the cowpea (Vigna sinensis), S. C. 

 Harland {Jovr. Genetics, 8 {1919), No. 2, pp. 101-132. flu. ./).— The author 

 describes observations on the mode of inheritance of factors affecting the flower 

 color, the pattei-n of the seed coat, and the color of the seed coat pattern of 

 V. sinensis, which may be summarized as follows: 



The factor producing the type of flower color known as pale (almost white 

 streaked with violet) has been designated L, and is said to exert a visible 

 effect only in types with the Holstein and small eye patterns. It is also 



