RECENT ADVANCES IN SCIENCE 405 



morph in the Albino Series of the Rat " (ibid.) ; Harman, " A 

 Probable Cause of Superfetation in the Cow " (Anat. Rec. 

 vol. xiv. May 191 8) ; Huber, " On the Anlage and Morpho- 

 genesis of the Chorda Dorsalis in Mammalia, in particular in 

 the Guinea-Pig (Cavia cobaya) " (ibid.) ; and Allen, " Studies 

 on Cell Division in the Albino Rat (Mus norvegicus, var. alb.). 

 III. Spermatogenesis ; The Origin of the First Spermatocytes 

 and the Organisation of the Chromosomes, including the 

 Accessory " (Jour. Morph. vol. xxxi. June 191 8). 



General. — Metcalf, in a paper entitled " Darwinism and 

 Nations " (Anat. Rec. vol. xiv. May 191 8), has endeavoured to 

 meet the German claim that the struggle for existence between 

 nations must be unrestricted in order that the mightiest nation 

 should become dominant. It is pointed out that that physical 

 force is not the only criterion of survival, and such things as 

 moral law, co-operation, etc., are also important factors. " The 

 north-east Germans are much more defective morally than the 

 southern and western Germans. They are also deficient in 

 intellectual ability and esthetic appreciation. The south Ger- 

 mans are not so." There follow classified quotations from 

 German sources illustrating the deficiencies noted in the body 

 of the paper. 



Other papers include : Guyer and Smith, " Studies on 

 Cytolysins. I. Some Pre-natal Effects on Lens Antibodies ' 

 (Jour. Exp. Zool. vol. xxvi. May 191 8) ; Whiting, " Inheritance 

 of Coat-Colour in Cats " (ibid. April) ; McClung, " Some Con- 

 siderations regarding Microscopical Technique " (Anat. Rec. 

 vol. xiv. May 191 8) ; and Danchakoff, "Cell Potentialities 

 and Differential Factors, considered in Relation to Erythro- 

 poiesis " (Amer. Jour. Anat. vol. xxiv. May 191 8). 



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