No. 3, JcLT, 1921] PHYSIOLOGY 3I3 



Between 30 and 50 distinct fields can be counted in one mount. These findings are then com- 

 pared with a standard. A list of some 78 substancee with characteristic tissue elements upon 

 which counts are to be based are included; for example, Cinchona, large bast cells; Conval- 

 laria, number of raphides; Absinthium, T-shaped trichomes .—^n<on Hogstad, Jr. 



2140. ViEHOEVER, Arxo. Chinese Colza. An adulterant of mustard seed. Jour. Amer. 

 Pharm. Assoc. 10: 16-19. 3 pi. 1921.— The seeds of Chinese Colza, also known as "Golden 

 Gate," which strikingly resemble white mustard, were offered for sale as mustard. The author 

 has identified the Chinese Colza as Brassica campesiris chinoleifera Viehoever. The taste 

 is that of cabbage rather than mustard and they lack the necessary phj^siological characters. 

 The fatty oil, however, can be used for technical purposes and undoubtedly, if properly re- 

 fined, as an edible oil.— The volatile oil was present to the extent of 0.4-0.6 per cent and was 

 identified as "crotonyl mustard oil." This oil is only slightly pungent and has the fiavor 

 of cabbage or turnip. It was found to be non-poisonous to rabbits and to lack the pronounced 

 bactericidal properties of the true volatile oil of mustard. Analyses of the air dried seeds 

 yielded 23 per cent protein, 11.5 per cent reducing substances, and over 40 per cent ether ex- 

 tract. The press cake, which contains up to 10 per cent or more of fatty oil, should make 

 a valuable feed product. The foliage should prove valuable as greens for salads, etc.— Anton 

 Hogstad, Jr. 



2141. YouNGKEX, Heber W. Pharmaceutical botany, a text book for students of pharm- 

 acy and science. Srd ed., ^79 p., 238 fig. P. Blakiston's Son & Co.: Philadelphia, 1921.— 

 The 1st chapter comprises 32 pages on fundamental principles of nomenclature, classification, 

 and microtechnique. The life histories of important type forms, such as Dryopteris Filix- 

 mas, Piniis sirobus, and Erythronium americanum, etc., are taken up in detail. Vegetable 

 cytology and plant tissues are discussed and illustrated by a number of new drawings. There 

 are 98 pages dealing with plant organs and organisms. The morphology and histology of 

 root, stem, and leaf are discussed and amply illustrated. Drawings of the various types 

 of fruits and inflorescences are included. The portion devoted to taxonomy covers the plant 

 kingdom from the primitive bacteria to the highest of the drug-yielding dicotyledonous fam- 

 ilies, the Compositae, A chapter has been added on ecology, and a 24-page glossary defines 

 the most important botanical terms used in the text. — M. S. Dunn. 



PHYSIOLOGY 



B. M. DuGGAR, Editor 

 Carroll W. Dodge, Assistant Editor 



(See also in this issue Entries 1589, 1590, 1814, 1827, 1830, 1869, 1937, 1959, 1973, 1978, 



2007, 2023, 2047, 2049, 2134, 2217) 



GENERAL 



2142. Anonymous. [Rev. of: Bayliss, W. M. Principles of general physiology, xxiv + 

 858 p., 261 fig. Longmans, Green & Co.: London, 1918.] Sci. Prog. [London] 13: 507-508. 

 1919. 



DIFFUSION, PERMEABILITY 



2143. Adair, Gilbert Smithson. The penetration of electrolytes into gels. II. The 

 application of Fourier's linear diffusion law. Biochem. Jour. 14: 762-779. 1920. 



2144. Lloyd, Dorothy Jordan. Note on the production of a contracting clot in a gel 

 of gelatin at the iso-electric point. Biochem. Jour. 14: 584-585. PI. 1. 1920.— The conclusion 

 is reached that gelatin gels are unstable at the iso-electric point. Small quantities of NaOH 

 have the same stabilizing influence when added to the system as HCl. The formation of stable 

 gels therefore is only possible in the presence of an electrolyte.— Jl. R. Davis. 



