No. 1, July, 1920] GENETICS 121 



741. Sh w\ -, J. K., AND J. B. NORTON. The Inheritance of seed-color coat In garden beans. 

 Massachusetts Agric. Exp. Sta. Bull. 185:58 L04. L918. A record of the inheritance of seed 

 coat color as indicated by crosses involving twenty-one different varieties of garden beans. 

 The inheritance of pigments and of pigment patterns were investigated. No relationship 

 was found to exist between the behavior of I hese I wo characters, each being conl rolled by dis- 

 tinct factors. The genetic compos it ion of the different varieties with respect to both pigments 

 and pigment pattern is Listed according to the factorial hypothesis advanced by the authors 

 to account for the observed results. — G. I'. McRoatie. 



7-12. Shull, G. H. Sterility and self and cross incompatibility in shepherd's purse. Sci- 

 ence 49: 547. 1919. — Portion of author's abstract of paper read before the American Philo- 

 sophical Society, April 25, 1919. Sexual reproduction is complex succession of processes, 

 which may be broken at any one of a number of different points. Sterility may therefore re- 

 sult in different ways that can not be brought under a common viewpoint. Many biotypes of 

 Bursa bursa-pastoris display unique characteristics with respect to sterility and fertility. 

 Most biotypes from Europe and North Eastern America have the lower flowers of the central 

 axis nearly always completely sterile. A form common on the Pacific coast of North and South 

 America and extending at least as far eastward as Tucson, Arizona, has no sterile flowers at 

 base of raceme. Cross between an east American biotype and the Pacific coast form gave an 

 Fi partially sterile, with a rhythmic succession of fertile and sterile flowers. In F 2 about one 

 in sixteen resembled one Pi, and a like number resembled the other Pi, while 14 again showed 

 a rhythmic succession, thus suggesting the interplay of two genetic factors. — Geo. H. Shull. 



743. Siemens. [Rev. of: Classen, K. Vererbung von Krankheiten und Krankheitsan- 

 lagen durch mehrere generationen. [Inheritance of diseases and disease primordia through 

 several generations.] Arch. Rassen.- u. Gesellschaftsbiol. 13: 31-36. 1918.] Zeitschr. in- 

 dukt. Abstamm. Vererb. 21: 122-123. July, 1919. 



744. Siemens. [German rev. of : Klausner, Priv.-Doz. Dr. E. Uber angeborene bezw. 

 hereditare Zystenbildung im Bereiche der Talgdriisen. (On congenital or hereditary forma- 

 tion of cysts from the sebaceous follicles.) Dermatolog. Wochenschr. 65:711. 1917.] Zeitschr. 

 indukt. Abstamm. Vererb. 22: 144. Jan., 1920. 



745. Siemens. [Rev. of: Lenz, Dr. Fritz. Uber dominantgeschlechtsbegrenzte Verer- 

 bung und die Erblichkeit der Basedowdiathese. (On dominant sex-linked heredity and the 

 inheritance of Basedow's disease.) Arch. Rassen.- u. Gesellschaftsbiol. 13: 1-9. 1918.] 

 Zeitschr. indukt. Abstamm. Vererb. 21: 123-124. July, 1919. 



746. Siemens. [Rev. of : Paulson, Dr. Jens. Uber die Erblichkeit von Thoraxanomalien 

 mit besonderer Beriicksichtigung der Tuberkulose. (On the inheritance of anomalies of the 

 thorax with special reference to tuberculosis.) Arch. Rassen.- u. Gesellschaftsbiol. 13: 10-31. 

 1918.] Zeitschr. indukt. Abstamm. Vererb. 21: 122. July, 1919. 



747. Siemens. [Rev. of: Stieve, Dr. H. Uber Hyperphalangie des Daumens. (On 

 hyperphalangy of the thumb.) Anat. Anzeiger 48: 64. Dec, 1919.] Zeitschr. indukt. Ab- 

 stamm. Vererb. 22: 64. Dec, 1919. 



748. Siemens. [Rev. of: Wolff, Dr. Friedrich. Ein Fall dominanter Vererbung von 

 Syndaktylie. (A case of dominant inheritance of syndactyly.) Arch. Rassen. -u. Gesellschafts- 

 biol. 13: 74-75. 1918.] Zeitschr. indukt. Abstamm. Vererb. 21: 122. July, 1919. 



749. Silver, Allen. Finch hybrids. Avic Mag. 10: 98. Mar., 1919.— Author is investi- 

 gating reported hybrids between Twite and Redpoll, Goldfinch and Twite, and Chaffinch and 

 Canary. Reports a Twite-Goldfinch hybrid with observations on Fi characters. — E. B. 

 Babcock. 



