and Laboratory Methods. '^481 



5 per cent, nitric acid causes no swelling. This appears only as the acid is 

 diluted in washing out and may be prevented by using formalin or alum as a 

 medium for the acid, but not by phloroglucin or alcohol. If aqueous solutions of 

 the acid are used the neutalizing agent should not be alcohol, formalin, salt solu- 

 tion, or phloroglucin. Five per cent, solution of potash alum maybe used since 

 it causes only a temporary swelling, but the best agent is 5 per cent, lithium or 

 sodium sulphate, renewed frequently with large objects and thoroughly washed 

 out afterwards in running water. c. a. k. 



Wacke, R. Beitrage zur Kenntnisse der Tern- These parasites were secured from 

 nocephalon. Zool. Jahib. Suppl. vi. Fauna fresh water or land Crustacea in Chili 



Chilensis3: i-i 17, Taf. i-o, 1903. , ,. , ^ 1 j ^ t.. 4. ^ 



^ ^ -^ and New Zealand. After treatment m 



cocaine they were fixed in alcohol or in chrom-osmic-acetic. Histological details 

 were determined on individuals stained m toto in Delafield's haematoxylin, alum- 

 carmine, borax-carmine, picro-carmine or picric acid. Sections 5 or 10 microns in 

 thickness were cut, and teasing by the microtome knife was prevented by coating 

 the sections with mastix-collodion. A triple stain of ha;matoxylin-eosin-orange 

 G, in sequence of naming, was used. Sections were mounted in balsam or 

 carbol-glycerine and histological details were found to be sharply differentiated. 

 Total preparations were mounted in clove-oil or carbol-glycerine. The author 

 concludes that this puzzling group of ectoparasites forms a connecting link 

 between the rhabdoccel turbellarians and the trematodes. c. a. k. 



GENERAL PHYSIOLOGY. 



RAYMOND PEARL, University of Michigan. 



Books and Papers for Review should be Sent to Raymond Pearl, Zoological Laboratory, 

 University of Michigan, Ann Arbor, Mich. 



Sajous, C. E. deM. The Internal Secretions ^his great work of Sajous', of which 

 and the Principles of Medicine. Vol. i. ° ■" 



With forty-two illustrations. Philadelphia, only the first volume hasso far appeared, 



F. A. Davis & Co. 1903. Pp. xxvi and 800. j^as for its purpose the presentation, 



elaboration, defense, and application to medicine of a theory of the physiology 

 of the animal body. That the theory is original, even startlingly so, may be seen 

 from the following very brief summary quoted from the preface : " Briefly, our 

 inquiry seems to us to have shown that the adrenal system " (" Adrenal system " 

 is the term used by the author to include the thyroid gland, the anterior pituitary 

 body and the adrenals) " is the source of the secretion which, with the oxygen 

 of the air, forms the oxidizing substance of the blood-plasma. It has also revealed, 

 we believe, the origin and mode of distribution of the bodies with which this 

 oxygen directly or indirectly combines : i. e., peptones, myosinogen, fibrinogen, 

 haemoglobin, and myelin " (peptones, myosinogen, and fibrinogen formed by 

 neutrophiles, haemoglobin by eosinophiles, and myelin by basophiles) " to insure 

 the continuation of life and the efficiency of all organic functions. Finally, it has 

 suggested that in addition to these agencies, all leucocytes and, under certain 

 circumstances, the plasma, contain a protective agency, trypsin, which, with 



