7. Restitutionslehre. 535 



blue; chequering is dominant to its absence; grizzling is dominant both to 

 chequering and to self-colour; a mealy brid is a grizzled in which white is 

 replaced by red, and since red is apparently dominant to white, mealy is 

 dominant to grizzle; white may combine with grizzling and have a common 

 inberitance, and red may combine with grizzling in the same way. Although the 

 results are qualitatively Mendel i an, there is an excess of cbequers in chequer 

 matings and of blaes in grizzle and blue matings. Doncaster (Cambridge). 



1493) Leake, H. M., Studies in Indian Cotton. 



(Journal of Genetics 1,3. p. 205—272. 29 Tables and 1 Plate. 1911.) 

 The chief varieties of Cotton Plauts are described, and a detailed account 

 is given of experiments on crossing them. Flower colour is found to depend 

 on two factors, which are inherited according to Mendel 's Law. Since 

 heterozygous flowers are not identical with homozygous, all the flower types 

 are accounted for by combinations of these two factors or their absence. 

 The leaf-sbape varies according to whether the lobes are broad or narrow; 

 broad crossed by narrow gives the F t generation with breadth fluctuating 

 about a value intermediate between that of the parents, and an F 2 generation 

 with continuous Variation, in which, however, the breath varies about three 

 modes — those of the original parents and the intermediate. The type of 

 branching is in general sympodial or monopodial, though this distinction is 

 not absolute; sympodial plants are annuals and flower early; monopodial are 

 perennial and flower later. Crossed together they give an intermediate F, 

 generation, with apparently incomplete resolution of the component factors in 

 subsequent generations. The possession of glands on the leaves is dominant 

 to the absence of glands, but tbe hybrids bave a smaller number than the 

 grandular parent. In addition to the correlation between type of branching 

 and time of flowering, red colour of the flower in correlated with later flowe- 

 ring, and yellow colour with large size of the petals. Doncaster (Cambridge). 



1494) Saltlina n, ß. N., Heredity and the Jew. 



(Journal of Genetics 1,3. p. 273—292. 4 Plates. 1911.) 

 The author discusses the evidence for the admixture of gentile blood 

 with the Jews during the last 1000 years, and concludes that in the Jews of 

 northern and central Europe it has been negligible. The facial characters 

 and expression of Jews are described and illustrated by photographs, and it is 

 shown that these have existed from very ancient times. Evidence is then 

 given that in the offspring of Jew and Gentile parents the Jewish features are 

 recessive, reappearing when a crossbred is married to a Jew. This is illu- 

 strated by genealogical tables. In pure Jewish families occasional children 

 are born of purely Gentile appearance, and evidence is given that when such 

 are mated to Jews their character is recessive to the Jewish instead of domi- 

 nant. This „pseudo-gentile" character cannot therefore have arisen from ad- 

 mixture with European blood, and probably arises from intermarriage with 

 alien stock during the early history of the Jewish people. 



Doncaster (Cambridge). 



7. Restitutionslehre. 



(Siehe auch Nr. 1346, 1408, 1412, 1414, 1461.) 



1495) Kennedy, B., Experiments in the Restoration of Paralysed 

 Muscles by means of Nerve Anastomosis. 



(Proc. Roy. Soc. B 84,568. p. 75—78. 1911.) 



Doncaster (Cambridge). 



