No. 2, June, 1921] GENETICS 151 



not the condition itself. — Thirty-eight family histories are analyzed with a more or 

 less complete record of 91 matings in which parents or offspring were asthmatic or had hay- 

 fever. In 4 matings where both parents were asthmatic, there were 9 asthmatic offspring, 

 and 1 normal who transmitted asthma. In 34 cases, with one parent asthmatic and the other 

 normal, but with positive family history, there were 60 asthmatic offspring, and 67 normal. 

 In 17 matings, with one parent asthmatic and the other normal, with negative family his- 

 tory, there were 60 normal offspring. Where both parents were normal in 32 cases, with 

 positive family histories, theoretically \ would be asthmatic, and f normal, but in this 

 serieis there were 3 times as many asthmatics as normal, there being 45 asthmatics and 15 

 normal. — Upon this data the writer concludes that bronchial asthma is inherited as a Men- 

 delian trait recessive to the normal condition. In those asthmatics with one parent asthmatic 

 and the other apparently normal, it is necessary to assume that the latter is simplex. The 

 appearance of asthma in direct line in succeeding generations can be explained only on the 

 supposition that for each generation, in the mating of the asthmatic and the new strain, the 

 latter, though apparently normal, must in every instance carry asthma in the simplex con- 

 dition in the germ-plasm (heterozygous). Those asthmatics with negative history are 

 explained as duplex in respect to the character, the tendency being transmitted through 

 several generations by antecedents who were themselves simplex. — Robert A. Cooke, 



1053. Alverdes, Friedrich. Uber das Manifestwerden der ererbten Aniage einer 

 Abnormitat. [On the manifestation of a hereditary primordium of an abnormality.] Biol. 

 Zentralbl. 40: 473^80. 1920. — Abnormalities in structure of rudimentary 5th and 6th pairs 

 of legs occurred (mostly in male individuals) in 1 pure line of Cyclops viridis but not in the 

 control line, or, with one exception, in wild stock. Inheritance of abnormality is quite 

 irregular. Sometimes normal parents produce abnormals, and abnormal parents frequently 

 produce very few abnormals. Percentage of abnormals is always fairly low. Abnormality 

 is very variable in its character; it is frequently marked on one side of an individual while 

 other side is entirely normal. Author attributes results to inheritance of a more than normal 

 lability of the primordium of the 5th and 6th pairs of legs. — A. M. Banta. 



1054. Ancel, p. Sur I'hermaphrodisme glandulaire. [On glandular hermaphroditism.] 

 Compt. Rend. Soc. Biol. 83: 1642-1644. 1920. — Six pigs studied were hermaphrodite in that 

 both glands were mixed, or one was true ovary, other was mixed or a testis. In mixed glands, 

 the upper part was testicular, the lower ovarian. Wolffian duct persisted only on side where 

 there was a testis or mixed gland. Uterus was well developed in all of them, but Fallopian 

 tube was well developed only on side next to true ovary. Observations are held to support 

 view that genital glands are normally hermaphrodite, with only one part developed. Author 

 believes persistence of Wolffian duct, often observed in female, is due to presence of 

 hermaphrodite gland or testis. — A. Franklin Shull. 



1055. Anonymous. Berichtigung. [A correction.] Zeitschr. Indukt. Abstamm. u. 

 Vererb. 20:295. 1919. — In Nachstein, N. Die Analyse der Ergfactoren bei Drosophila 

 und deren zytologischen Grundlage. Zeitschr. Indukt. Abstamm.- u. Vererb. 20: 118-156. 

 1919, the labeling of figure 2, page 133, should be interchanged as follows: In the Fi generation 

 the word "rotaugig" should read "weissaugig" and in the F2 generation the word "rotaugig" 

 at the right should read "weissaugig." — /. L. Collins. 



1056. Anonymous. Better dairying by bull associations. Joint use of good sires improves • 

 herds. Jour. Heredity 10: 135. Mar., 1919. — A quotation from a News Letter of the U. S. 

 Department of Agriculture. The advantage of cooperative bull associations are discussed 

 briefly. — Sewall Wright. 



1057. Anonymous. Variation, selection and mutation in one of the protozoa. Jour. He- 

 redity 10: 143. Mar., 1919. — Review of work of Middleton and Jennings and of R. W. 

 Hegner, which indicates that heritably diverse strains may be selected out from a single 

 vegetatively reproduced organism, — in this case Arcella dentata. — /. H. Beaumont. 



