212 GENETICS [Bot. Absts. 



1494. Matouschek. [Rev. of: Correns, C. Fortsetzung der Versuche zur experi- 

 mentellen Verschiebung des Geschlechtsverhaltnisses. (Continuation of the attempt to 

 experimentally shift the sex ratio.) Sitz.-Ber. Preuss. Akad. Wiss. Berlin 1918: 1176-191S.] 

 Zentralbl. Physiol. 34: 18-19. 1919. 



1495. Matouschek. [Rev. of: Rattnkiaer, C. Uber den Begriff der Elementarart im 

 Lichte der modernen Erblichkeitsforschung. [On the concept of elementary species in the 

 light of modern genetical investigations.] Zeitschr. indukt. Abstamm. Vererb. 19:225-240. 

 2 fig. 1918. (See Bot. Absts. 2, Entry 41.)] Zentralbl. Physiol. 34: 71. 1919. 



1496. Meyer, A. W. The occurrence of superfoetation. Jour. Amer. Med. Assoc. 72: 

 769-774. 1919. — Cases cited in women in which one embryo of twin pregnancy dies, but 

 surviving embryo may continue to grow for some time. Thus differences in size and devel- 

 opment between the two embryos has frequently led to erroneous conclusions of superfoeta- 

 tion. Author suggests that similar cases in other forms (cat, cow, rat) may have been incor- 

 rectly called superfoetation. — J. A. Deilefsen. 



1497. Moore, Carl R. On the physiological properties of the gonads as controllers of 

 somatic and psychical characteristics. I. The rat. Jour. Exp. Zool. 28: 137-160. 5 fig. 

 May 20, 1919. — Author has repeated Steinach's experiments on the heterosexual transplanta- 

 tion of the gonads in rats. He confirms Steinach's conclusions that spayed females into 

 which testes have been transplanted, exhibit, when mature, the sexual instincts of the male. 

 Likewise, castrated males into which an ovary has been grafted, exhibit the sexual and 

 parental instincts of the female. Other secondary sexual differences, such as differences in 

 body weight, length and size of skeleton, condition of pelage, and fat deposition, are too 

 variable to warrant their use as indicators of a specific response to the influence of the gonads 

 and hence Steinach's conclusions in respect to these characters are not confirmed. The 

 transplanted ovaries are nearfy normal and may ovulate. The transplanted testes consist 

 mainly of interstitial cells, with scattered tubules lacking spermatocytes or spermatozoa. — 

 H. D. Goodale. 



149S. Moore, Carl R. On the physiological properties of the gonads as controllers of 

 somatic and psychical characteristics. II. Growth of gonadectomized male and female rats. 

 Jour. Exp. Zool. 29:459-467. 1 fig. July 5, 1919. — A comparison of the growth curve of 

 gonadectomized males with that of gonadectomized females, shows that the former is at the 

 higher level, though the latter curve is higher than that for intact females. — H. D. Goodale. 



1499. Nohara, S. So, sonohoka Nikun no Daikon no hi-Mendel-sei Iden ni tuite [On the 

 non-Mendelian inheritance of Raphanus sativa by So and two other authors.] [In Japanese]. 

 Bot. Mag. Tokyo 33 (Japanese part): 141-144. 1919.— Author thinks that the so-called non- 

 Mendelian inheritance of So, Imai and Terasawa in Raphanus sativa (Bot. Absts. 2, Entry 

 956) might well be Mendelian, and that the non-existence of homozygous red forms might be 

 explainable on the basis of the presence of a lethal factor. — S. Ikeno. 



1500. Reimers, J. H. W. Tn. De studie der afstammingen, der bloedlynen en de karak- 

 teristiek van onze rundveerassen. [Study of the origin, the bloodlines and the characteristics 

 of our races of cattle.] Cultura 30: 328-353. 1918. — Writer presents his method of study of 

 descendance and of bloodlines, aiming to find characteristics of the different families con- 

 stituting our races of cattle. He gives as examples, the characteristics that are used in 

 systems of cattle-judging, the measurements of different parts of the body, production of 

 milk, and fat-content of the milk. These characteristics are studied relative to three well- 

 known bulls which are kept for breeding in the Dutch province of Friesland and they show 

 very well the usefulness of the writer's method. — M. J . Sirks. 



1501. Schaffner, John H. The nature of the dioecious condition in Morus alba and 

 Salix amygdaloides. Ohio Jour. Sci. 19: 409-416. 1919.— See Bot. Absts. 3, Entry 1575. 



