Journal of Applied Microscopy. 487 



matter with 56.77 per cent, of lime in those from the side that had been operated 

 upon. Experiments were also made upon kittens to determine the effect of inner- 

 vation upon the regeneration of the mucus membrane of the lip. Resection of 

 the mandibular nerve in kittens from one to two weeks old had very slight effects 

 or none at all, but produced changes in kittens that were several months old. 

 This is thought to be due to the fact that the younger kittens feed by sucking 

 motions, while the older ones have energetic chewing motions. The experi- 

 ments show that the growth of the teeth is independent of nervous influence and 

 that the mandibular nerve does not contain fibers which affect nutrition. It 

 appears that certain tissues and organs may grow and be regenerated without the 

 active influence of the nerves. e. m. b. 



This describes histological changes in 

 Thomson, Dr. H. Campbell. On the Structure , i • ^^ t 



of Brain Cells and their Degeneration in the brain cells of certam patients. 



General Diseases. Lancet, 1: 1428-1429, Fresh tissue was Stained with methylen 



blue, care being taken to guard against 

 post-mortem changes. Normal cells showed an even distribution of chroma- 

 tophile granules. Cells from two cases of meningitis in children, respectively 

 fourteen months and one year of age, showed the cells stained in patches of 

 different intensity, no differentiation of chromatophile rods, the nucleus absent 

 or ill-defined and the nucleolus sometimes displaced. Cells from a case of septicae- 

 mia in a child of five years presented a dark blue appearance with no differen- 

 tiation. The nucleus was not well defined, but the nucleolus as a rule was un- 

 changed. Cells from a case of tetanus showed loss of chromatic substance and 

 presented an appearance of sponge work on a white background. The meshes 

 of the sponge work were stained brown by the methylen blue. e. m. b. 



The results obtained are in accord with 

 Turner, Aldren, and Hunter, William. On a , , , , 



Form of Nerve Termination in the Central the neuron theory, and support the 

 Nervous System, Demonstrated by Methy- view that impulses are transmitted by 

 len Blue. Brain, 22: i2^-n6, iSqq. , ^ , ^, 



the contact of neural processes. The 



point of difference from the observations of others consists in the finding of a 

 basket-like network into which the cellulipetal nerve fiber breaks up at its ter- 

 mination. This network is disposed over the surface and the base of the proto- 

 plasmic processes of the cell with which it comes in contact. From this it is 

 assumed that the impulses are transmitted from the terminal directly to the cell 

 body. The network was found only by means of methylen blue staining and is 

 not comparable with the basket-work of Purkinje cells. Observations were made 

 on monkeys, cats, dogs, rabbits, and mice, and terminations of this kind were 

 found in the cerebral cortex, optic thalamus, and various nuclei of the brain. 



E. M. B. 



RECENT LITERATURE. 



Ruffini, A. Sulla fina anatomia dei fusi n euro- Hohne, 0. Beitrage zur Kenntniss des Tast- 



muscolari del Gatto e sul loro significato sinnes der Haut und der Schleimhaute, be- 



fisiologico. pp. 50, 2 tavole. Siena, 1898. sonders in der Medianlinie des Korpers. 



Acquisto, V. Sulla struttura delle cellule ner- PP- 33, - cuts. Rostock, 1898. 



vose nei gangli, spinali dell' uomo. Monit. Donaldson, H. H. A Note on the Significanec 



Zool. Ital., pp. 49. of jhg s^aii Volume of the Nerve Cell 



Thilo, 0. Die Augen der Thiere. 24 pp., 2 Bodies in the Cerebral Cortex of Man. 



pis. Hamburg, 1899. Jour. Comp. Neur., 9 : 141-149,1899. 



