No. 1, August, 1920] GENETICS 55 



412. Lundborg, H. Olika folk och kulturer, sedda i rasbiologiskt ljus. — Internationell 

 Politik. [Different peoples and cultures in race-biological light.) 125X200 mm., 8 p. Stock- 

 holm, 1919. — Author treats the consequences of (1) intcr-marriages, (2) extreme mixing of 

 races, (3) marriages within the same tribe (inter-marriages in its wide sense) and (4) race- 

 mixings between related peoples. — K. V. Ossian Dahlgrcn. 



413. Lundborg, H. Om modern arftlighetsforskning med sarskild hansyn till mannis- 

 kan. [On modern inquiry into heredity with special consideration to mankind.] Ord och Bild 

 [Stockholm] 28: 18G-19G. 4 jig. 1919. — Popular treatise. — K. V. Ossian Dahlgren. 



414. Lundborg, H. En svensk bondeslakts historia sedd i rasbiologisk belysning. — 

 Svenska Sallskapets for Rashygien skriftserie II. [The history of a Swedish peasant family 

 in eugenical light. No. II. of the papers of the Swedish Eugenical Association. 13S X 215 n 



40 p., S fig. P. A. Norstedt & Soners Forlag: Stockholm, 1920. — Author first discusses genea- 

 logical investigation as a cultural subject. Especially in Sweden it might be possible to prac- 

 tise genealogical inquiries on a greater scale, because the registration of the inhabitants of 

 Sweden since centuries ago is more complete than in any other country. The "husf: rhors- 

 bocker" are especially important, because in these books on the same page are noted whole 

 families. After a small chapter on "genealogical principles"" the author proceeds to a popular 

 description of his investigation on the Lister family. This family was extensively discussed 

 in author's great work "Medizinisch-biologische Familieforschungen innerhalb eines 2232- 

 kopfigen Bauergeschlechtes in Schweden," Jena 1913. — K. V. Ossian Dahlgren. 



415. Lynch, Clara J. An analysis of certain cases of intra-specific sterility. Genetics 

 4: 501-533. 2 fig. Nov., 1919. — Analysis of sterility in certain mutant races of Drosophila 

 melanogastcr. Fused is sex-linked recessive. Males are fertile with normal or heterozygous 

 females; fused females produce no offspring when mated to fused males, only a few (and these 

 all daughters) when mated to normal males. XXY fused females, mated to normal males, 

 produce a few sons, but these are all non-disjunctional exceptions. Hence fused gene acts 

 to prevent eggs from developing, but this action may be inhibited by its normal allelomorph, 

 either before maturation (in heterozygous female) or after fertilization (in not-fused offspring 

 of fused female). Rudimentary, another sex-linked recessive, acts in same way as fused, but 

 not so completely, as rudimentary females produce a few rudimentary offspring. Morula, 

 reduced bristle, dwarf (autosomal recessives) have sterile females and fertile males. Dibro 

 (autosomal recessive) apparently sterile in both sexes. Cleft (sex-linked recessive) has 

 sterile males, and females have never been obtained. In none of the cases studied was it 

 possible to isolate a sterility gene independent of the mutant gene itself. Sterility is prob- 

 ably one of the effects of these mutant genes. — A. H. Sturtevant. 



416. Macoun, W. T. Blight resistant potatoes. Canadian Hortic. 42: 129-156. 1919 — 

 See Bot. Absts. 3, Entry 1644. 



417. MacBride, E. W. The inheritance of acquired characters. Nature 103: 222. May 

 22, 1919. — Refers to recent work of Kammerer published in Archiv fur Entwicklungsmechanik, 

 1919, extending earlier experiments with Alycetes, the "mid-wife" toad. These normally 

 pair on land, the horny patch on the hand of the male, characteristic of water-breeding Anura, 

 being absent. Kammerer had previously found that Alycetes subjected to a higher tempera- 

 ture, paired in water, and that the Fi and F 2 generations developed the horny patch, even 

 when returned to a terrestrial environment. It is now found that the patch persists in the 

 F« generation. — McBride deprecates certain criticisms of the work of Kammerer and is in- 

 clined to support the results as evidence toward the inheritance of acquired characters. He 

 notes that arrangements for a repetition of the experiment in the Zoological Gardens, are 

 being made, although a minimum of six years will be required. — Although author is inclined 

 to challenge Mendelians in connection with the results achieved by Kammerer, experiments 

 with Drosophila, particularly where abnormal abdomen develops, are suggestive that a com- 

 mon explanation may underlie both phenomena. — L. B. Walton. 



