and Laboratory Methods. ^^^^ 



part going into solution in glycerine. The poison soluble in alcohol acts upon 

 the musculature as curare while the others affect the central nervous system. 



The amber-colored fluid pressed from Ascaris lumbricoides of the pig yields 

 two poisons, one soluble- in water but not in alcohol, and one in water and in 

 alcohol but not in ether ; the former affects the nervous system, the latter acts 

 as curare. The author reviews the symptoms attending infection by cestodes 

 and nematodes and finds among them many which may be referred to those 

 produced by the injection of the poisonous extracts discovered by him. The 

 pathogenic action of these parasites is thus chemical rather than merely 

 mechanical. c. a. k. 



Girod, P. und Marshall, W. Tierstatten und Professor Marshall's translation of this 

 Tiergesellschaften. 278 pp. Hermann See- well-known treatise of Professor Girod 

 man Nachfolger. Leipzig, 1901. Mk. 3.00. ^^^^ ^^^ ^^^.^j organization of animals 



is enhanced in value by his critical annotations which are extensive and serve 

 to elaborate many points but partially developed by the author or present with 

 greater precision the facts pertaining to animal societies. The association of 

 various vertebrates, the social organizations of the invertebrates, the questions 

 of commensalism, parasitism and colonial organisms fall within the scope of 

 the work. c. a. k. 



Schaefer, F. Ueber die Schenckeldriisen der The skin was removed from the mesial 

 Eideciisen. Arch. f. Naturgesch. Jahrg. £^^,g q£ \^„ f j-qj^ the cloaca tO the knee 

 68: Bd. I, 27-64, Taf. 3, 4, 1902. , . , . , ^ . n -j -.u 



and pmned out in the fixmg fluid with 



porcupine spines. Concentrated sublimate, picro-sublimate (concentrated aq. 



sol. sublimate 1 part, distilled water 2 parts, saturated aq. sol. picric acid 



1 part), Fol's chrom-osmic-acetic mixture, and Miiller's fluid were all used in the 



preparation of material. The concentrated sublimate caused some shrinkage of 



the tissues. Differential staining of the sections was accomplished with marked 



success with a combination of borax-carmine, Blochmann's modification of Van 



Gieson's method, and tetrabromfluorescin. Nuclei stain red, connective tissue 



blue, cornified tissue citron-yellow, and glandular tissue differently, according to the 



state of activity. Zander's methyl-eosin in 1 per cent, aqueous solution was used 



to demonstrate eleidin granules in material fixed in Miiller's fluid. These 



granules stain a deep purple-red by this method, but are with difficulty stained 



after other fixing agents. c. a. k. 



