No. 3, January, 1922] GENETICS 167 



of the few historically old varieties possess in various combinations all the characters exhibited 

 by commercial varieties, and then to interpret existing varieties on the basis of hybridization 

 with resulting segregation and recombination of characters. — The studies reported are con- 

 cerned with flower color, flower form, and leaf-base, in which mono- and bigenic results were 

 secured although the data are complicated in some cases by the semi-quantitative nature of 

 the character differences. In general it is concluded that the results demonstrate the com- 

 plexity of difference from a genetic standpoint between any 2 of the so-called fundamental 

 varieties of A'', tabacum, and that it is futile to determine affinities on the basis of morphologi- 

 cal studies unaccompanied by experimental investigations. More detailed reports of this 

 series of studies are promised. — /. Johnson. 



lOSf). Shamel, a. D. Origin of a new and improved French prune variety. Jour. Heredity 

 10: 3.39-343. Frontispiece, S fig. 1919. — An improved strain of French prune (Prune d'Agen), 

 which originated as a bud sport, is described. The new prune (designated as No. 1418) is 

 roundish-oval in contrast with the pyriform typical French prune. The tree is apparently 

 more vigorous and has larger and heavier foliage than the parent tree. Occasionally spurs 

 are found on the new strain which produce prunes similar to those of the parent variety. 

 The dried prunes of the new strain are said to average 2.5-30 to the pound, as compared with 

 50-60 to the pound for the ordinary type. — A. H. Hendrickson. 



1087. Standley, Paul C. Albinism in the black bear. Science 54: 74. 1921.— The 

 author calls attention to a statement by John Tanner in a book published in 1830, relative to 

 an old albino female bear with 1 albino and 3 pigmented cubs. If albinism in bears is assumed 

 to be recessive, the male parent of the albino cub must have been heterozygous. — H. L. 

 Ibsen, 



1088. Sturtevant, G. Notes from my hybridization records. Bull. Amer. Iris Soc, 

 2: 29-30. 1921. — The author gives a list of 87 varieties of Irises which have proved fertile; 

 7 which have not seeded but have fertile pollen; 4 which have set seed but in which pollen is 

 absent or sterile; and 21 that are sterile. It is stated that plants resulting from wide crosses 

 are usually sterile. — /. Marion Shull. 



1089. T[axsley], a. G. [Rev. of: Hagedoorx, A. L., and A. C. Hagedoorn. The 

 relative value of the processes causing evolution. 294 P- Martinus Nijhoff : The Hague, 1921.] 

 New Phytol. 20: 124^131. 1921. 



1090. Thadani, K. I. A toothless type of man. Jour. Heredity 12: 87-88. 1921.— 

 "There occurs in the Hindu Amil community of Hyderabad Sind, a town in India, a type of 

 men who have no teeth. These men are further characterized by a bald head and an extreme 

 sensitiveness to heat. They are known as 'Bhudas' which literally means 'toothless.'" The 

 known facts concerning heredity in these men indicate that the condition is a typical case of 

 sex-linked inheritance. The writer seeks further information. — Howard J. Banker. 



1091. Thjotta, Th., and Odd Kinck Eide. A mutating, mucoid paratyphoid bacillus 

 isolated from the urine of a carrier. Jour. Bacteriol. 5: 501-510. 1920. — An account is given 

 of a paratyphoid bacillus which suddenly began to be given off by a carrier and which differed 

 from the common type in forming masses of mucus enclosing either one or more bacilli in a 

 common capsule. This mucus covering which resulted in a retarded activity on the part of 

 the mutant over the common type, appeared upon repeated cultivation, to be a constant 

 character. — Chester A. Darling. 



1092. Thomson, J. Arthur. [French Rev. of: Blaringhem, L. Les problemes de 

 I'heredite experimentale. (The problems of experimental heredity). IS X 19 cm., 317 p., 20 

 fig. Ernest Flammarion: Paris, 1919 (see Bot. Absts. 4, Entry 523).] Scientia 30: 153-154. 

 1921. 



1093. Trachtenberg, H. L. The analysis of the results of Professor Johannes Schmidt's 

 diallel crossings with trout. Jour. Genetics 11: 75-78. 1921. — The author finds some of 



BOTANICAL ABSTRACTS, VOL. X, NO. 3 



