Literaty Notices. ciii 



Nucleary Division in Regenerating Nerves. 



Professor G. Bizzozero calls attention to the fact that the priority 

 of the discovery of the karyokinetic division of the nuclei of 

 Schwann's sheath during regeneration of nerves belongs neither to 

 Huber nor Biingner, but to Dr. A. A. Torre who, while working in 

 Bizzozero's laboratory, described the mitotic division not only in cases 

 of degeneration, but during normal growth.^ 



Influence of Music. 



Professor Dogiel has studied the effect of music upon man and 

 animals. The arm of the subject was enclosed in a glass cylinder 

 filled with water which communicated with a delicate manometer and 

 registering apparatus. The frequency of the pulse and the variations 

 in blood pressure are thus registered at the same time. 



In the experiments with animals the manometer is applied direct- 

 ly to the vessels. In dogs and rabbits a remarkable increase in pulse 

 rate and pressure is shown in each case during whistling. 



Strychn'ia and other poisons increase the irritability of the audi- 

 tory nerve, while spirituous liquors and opium decrease the effect of 

 music upon the circulation. It might seem probable that these 

 changes are due to contractions of the voluntary muscles, but it was 

 found that even after curare poisoning, by which the voluntary mus- 

 cles are paralyzed, the reaction continued. 



It is a fact familiar to all that dogs and, to a less extent, cats are 

 very susceptible to musical sounds. Many dogs are strongly affected 

 by the ringing of bells. 



Lewin on Nicotinism.^ 



The functional disturbances caused by the excessive use of tobac- 

 co, have been fully studied in appreciation of their social importance. 

 The deleterious influence of tobacco may be observed after its use in 

 any form; smoking, chewing, snuffing. Typical nicotinism occurs, 

 as a rule, after a long continued abuse of tobacco, sometimes not 

 until after twenty years and more. The human organism is 

 capable of a certain degree of accommodation to the tobacco poison, 



* Giornale della R. Accad. di med. di Torino., Nov. 2S, 1884. 



Bizzozero. Ueber die Regeneration der Elemente der Gewebe unter path- 

 ologischen Bedingungen. Centralblt. f. d med. zvissenchaft, i886, 5. Archiv.f. 

 niik. Anatonne, XLI, 2, p. 338, 



"^Internationale Klinische Rundschau, No. 24. 



