86 GENETICS [BoT. Absts., Vol. X, 



541. MacBridb, E. W. The inheritance of acquired characters. II. Sci. Prog. 15: 

 642-644. 1921. — In a letter to the editor of Science Progress, the author attempts to answer 

 criticisms by Julian Huxley (see Bot. Absts. 10, Entry 532) on the author's previous paper 

 on this subject (see Bot. Absts. 9, Entry 252), and reiterates some of his former statements. — 

 W. H. Taliaferro. 



542. P[openoe], P[aul]. The child, before and after. [Rev. of: Feldman, W. M. The 

 principles of ante-natal and post-natal physiology, pure and applied. 69Jf p., 6 pi., 129 fig. Long- 

 mans, Green & Co.: London, 1920.] Jour. Heredity 12 : 109. 1921. 



543. Safford, William E. Synopsis of the genus Datura. Jour. Washington Acad. 

 Sci. 11: 173-189. 3 fig. 1921. — The present systematic synopsis of the genus Datura is part 

 of an extensively illustrated paper on the genus to appear in the Year-Book of the Smithsonian 

 Institution. The purple-flowered form {Datura T alula), which has been found to differ from 

 the white-flowered form by a single Mendelian factor, is included in the latter in the species 

 D. Stramonium, as also the form with spineless fruits (D. inermis), which is recessive to the 

 type with spiny fruits. — A. F. Blakeslee. 



544. ScHROEDER. Entstehung und Vererbung von Missbildungen an der Hand eines 

 Hypodaktyliestammbaimies. (Origin and inheritance of deformities in the case of a hypo- 

 dactylous pedigree.) Monatsschr. Geburtshilfe Gynakol. 48:210-222. 3 pi. , 7 fig. 1918.— A 

 condition involving reduction in number of digits and other rather extensive malformation of 

 the hands and feet appears in five successive generations of one family. The progenitress of 

 the strain, who is said to have had normal parents, produced three affected and two normal 

 children. Her normal descendants have apparently had only normal children; the affected 

 individuals have 28 normal and 16 affected offspring. The condition is transmitted by both 

 sexes. Examination of the foetal membranes of the youngest child showed no evidence of 

 an amniogenetic origin of the malformation, which the author regards as a primary germinal 

 variation which may, however, be transmitted by other means than the chromosomes 

 (cytoplasmic). The trait is believed to become progressively less marked in successive 

 generations. — C. H. Danforth. 



545. Terbt, Jeanne. Les "Taraxacum" de graine sont-ils differents des "Taraxacimi" 

 de boutures? [Are Taraxacimis produced from seed different from those produced from cut- 

 tings?] Bull. Acad. Roy. Belgique CI. Sci. 1919: 497-502. 1919.— On the basis of his experi- 

 ments the author reports the following results: Plants produced from seeds taken from dif- 

 ferent heads of the same plant show no variability. The conditions to which the embryo is 

 subjected in the seed are without importance from the point of view of variability, since 

 plants produced from cuttings are identical with those produced from seeds of the same plant. 

 Neither the medium in which the plant is cultivated, whether clay or sand, nor the time of 

 year in which the seeds are produced has any influence on variability. The author aska 

 whether these results do not demonstrate, at the same time, that variability is brought about 

 only by chromatin reduction. — H. C. Sampson. 



546. T[homson], J. A. Lamarckism unashamed. [Rev. of: Kidd, W. Initiative in evolu- 

 tion. X + 262 p. H. F. & G. Witherby: London, 1920.] Nature 107: 419-420. 1921. 



547. Vries, Hugo de. Opera e periodicis coUata. [Works collected from periodicals.] 

 16.5X24 cm., 589 p. Vol, 5, A. Oosthoek: Utrecht, 1920. — The volume contains reprints of 

 the author's book on "Intracellular pangenesis," published originally in 1889, and 14 other 

 articles on heredity and variation, published in scientific journals during the years 1889-1896. 

 The pagination is not that of the original, but is consecutive for the volume, the full citation 

 of the originals being indicated at the beginning of each article. — Geo. H. Shull. 



548. Vries, Hugo db. Opera e periodicis collata. [Works collected from periodicals.) 

 16.5X24 cm., 593 p. Vol. 6. A. Oosthoek: Utrecht, 1920.— The volume contains reprints 



