Notices and Bihliographjf 
127 
Klebs, G. Studien iiber Variation. Arch. f. Entwickclungsmecli. Bd. 24, pp. 29—113. 
1907. 
An extensive statistical study of variation in plants, dealing mainly with Seduni 
spectahile and having as its object the investigation of the " notwendigon Zusammen- 
hang der Variationskurven mit bestimmtcn Aussenbedingungen." 
Lapicqde, L. & GiRAKD, P. Sur le poids de I'encephale chez les animaux domestiques. 
C.R. Soc. Biol., T. 62, No. 19, pp. 1015—1018. 1907. 
Leicester, J. C. H. The relative Sizes of the Maternal Pelvis and of the Foetus in 
Europeans, Eurasians, East Indians and Bengals. Lancet, 1907, Vol. i, pp. 150—153. 
Lock, R. H. On the Inheritance of Certain Invisible Characters in Peas. Proc. Roy. 
Soc. Vol. 79b, pp. 28—34. 1907. 
MacCdrdy, H. & Castle, W. E. Selection and Cross-breeding in Relation to the 
Inheritance of Coat-pigments and Coat-patterns in Rats and Guinea-jjigs. Carnegie 
Institution of Washington, Publication No. 70, pp. iii and 50. 1907. 
" In both rats and guinea-pigs we can by selection increase or decrease at will 
the average extent of the i^igniented areas. In both rats and guinea-pigs the extent 
of the pigmented areas varies continuously, and out of these continuous variations 
permanent modification of the pigmentation can be secured" "Further we are far 
from convinced that all evolutionary progress is to be attributed to discontinuous 
variation any more than to Mendelian inheritance." 
Martin, R. System der (physischen) Anthr'opologie und anthropologische Bibliographic 
Korrespondenzblatt der deutschen Anthropolog. Gesellschaft, Jg. xxxviii. 
A most elaborate and most German numerical symbolism for the classification of 
the subject matter of Anthropology. The title of Martin's own paper is |^^^ (091) 
in this symbolism, which we suppose gives some satisfaction to the classificatory mind. 
MiCHAELis, F. Das Hirngewicht des Kindes. Monatsschr. f. Kinderkrankh., 1907-8, 
Bd. VI, S. 9—26. 
Nettleship, E. a History of congenital stationary Night-Blindness in nine consecutive 
generations. Ophthalmological Society's Transactions, Vol. xxvii. 
A fine piece of work, if we do not wholly agree with the author's interpretation of 
his statistics. 
Neustatter, 0. Geburtenziffer und Fruchtbarkeit. Munchen. med. Wocheuschr., Bd. liv, 
85 pp. 1907. 
Nichols, J. B. The Numerical Proportion of the Sexes at Birth. Mem. Anthropol. 
Assoc. Vol. I, pp. 249— 300. 1907. 
Pearl, R. & Clawson, A. B. Variation and Correlation in the Crayfish, with special 
Reference to the Influence of Differentiation and Homology of Parts. Carnegie 
Institution of Washington, Publication No. 64, pp. 70. 1907. 
Pearson, Karl. Mathematical Contributions to the Theory of Evolution, xvi. On 
Further Methods of determining Correlation. (Dulau & Co., London.) 
Gives methods of finding true variate correlation from placing individual in 
rank. 
Rommel, G. M. Relative Proportion of the Sexes in Litters of Pigs. U. S. Dept. Agr. 
Bur. Anim. Ind. Circular No. 112, p. 1. 1907. 
Finds that out of 13,285 pigs born in 1477 litters there were 6660 $ $ and 
6625 9 9, giving the sex ratio 1005 ^ to 1000 ^ • Eight breeds were represented in 
the lot. 
