Literary Notices. yi 



centers was obtained by following medisection with liemisection. One 

 lateral half of the medulla was separated into anterior and posterior 

 divisions by a transverse cut. The arches and spiracle of the unin- 

 jured side continued their normal movements. The spiracle and first 

 gill arch, controlled by the anterior division of the opposite side, some- 

 times exhibited a rhythm which differed both from the rhythm of the 

 uninjured side and also from that of the remaining gill arches of the 

 same side, which were under the control of the posterior division of 

 the lateral half of the medulla. At times the respiratory mechanisms 

 connected with all three divisions of the medulla moved in unison. 



Lesions of the different lobes of the medulla indicated that the 

 ganglion cells of sensory respiratory neurones, those of the seventh, 

 ninth and tenth cranial nerves, are situated in the lobus vagi. Motor 

 ganglion cells and neuraxones were found ventrad of the lobus vagi 

 and in the fasciculus longitudinalis posterior. F. w. c. 



Gardella, Eloisa. Azione dell' acido fenico sulla sensibilita gustativa. Ar- 

 chrvio di Fisiologia, 1904, 1, 398-402. 



From its general anaesthetic properties we would expect phenic 

 acid to cause a rise in the threshold of sensibility to taste stimuli. On 

 the contrary, increasing strengths of phenic acid solution up to 3 % , 

 applied for 10 seconds, cause a lowering of the threshold for all four 

 of the tastes, bitter, sweet, salt and acid, most of all for bitter. With 

 a constant 2.5% solution and with varying time the threshold falls rapid- 

 ly during the first 10 seconds, then rises to the normal at 30 seconds, 

 and from there continues to ascend more slowly to 45 seconds. 



J. C. BELL. 



Langley, J. N. On the Effects of Union of the Central Part of the Cervical 

 Sympathetic with the Peripheral Part of the Chorda tympani. Archivio 

 di Fisiologia, 1934, 1, 505-511. 



Three cats were operated upon and in 89, 96 and 176 days re- 

 spectively they were killed and the nerves examined. Experiments 

 upon the operated cats and examination of the nerves led to the con- 

 clusion that "the sympathetic fibers had united with the nerve cells 

 on the course of the chorda tympani, and in consequence that sympa- 

 thetic preganglionic fibers are capable of uniting with other similar 

 cells . . . which occur on the course of the cranial nerves." The 

 observations also showed that "the formation of meduUated fibers in a 

 peripheral nerve may be caused by fibers reaching it which are them- 

 selves non-meduUated." j. c. bell. 



