308 SUMMARY OF CUBBEN1 RESEARCHES RELATING TO 



Testing for area, which has been said to be abundant in the gland, gave 

 no result. An extract of the gland confirmed Blanehard's statement 

 as to the presence of ferments similar to amylopsin and lipase. 



Cytological Notes. — Fr. Meves * describes the mitochondria, or 

 " chondriokonts " (chains, or rods or granules), in embryonic cells, and 

 supports Benda's view that they must be regarded as definite and in- 

 dividualised components of the cells. 



Achille Russot discusses the origin of the mitochondria and the 

 formation of the deutoplasm in the oocytes of mammals. 



Neurological Studies. — A. Wallenberg! gives an account of his 

 researches on the brain and cranial nerves, with especial reference to the 

 sensory tracts, in Teleosteans and Selachians. F. Livini § describes the 

 cerebrum and thalamencephalon of a marsupial, Mypsi/primnus rufescens, 

 with especial reference to the nerve-tracts. 



Myelin-bodies in Nervous System. || — A. Capparelli describes cor- 

 puscles containing myelin in the central nervous system of higher 

 animals, and discusses their relations to the protoplasmic prolongations 

 of the nerve-cells. They occur chiefly in the grey matter of the brain 

 and spinal cord, as egg-shaped or spherical bodies, with an envelope of 

 a nervous network, the meshes of which are sometimes so close as to 

 suggest a homogeneous membrane. This network surrounds true myelin 

 masses. These myelin-bodies are in contact with the protoplasmic end- 

 ings of the nerve-cells and with the surface of the cell. They pro- 

 bably supply nutritive and functioning material for the nerve-cells and 

 nets. 



[c. General- 

 Young-^ R, ec i Kangaroo.1T — W. H. Sheak describes a young red 

 kangaroo (Ifacropus rufus Desru.) which was born in the Barnum and 

 Bailey menagerie. He first saw it when it was beginning to put its 

 head out of the pouch, and was apparently about two months old. A 

 month later it began to come out of the pouch, but would run back 

 when alarmed, going in head first and turning round, but leaving the 

 tail and hind legs protruding 18-20 in. The mother was very solicitous 

 for his safety, and at first tried to prevent his coming out by hold- 

 ing him with her paws. The father shared the cage, but took no 

 notice of the young one. The young one showed the brick-red colour 

 of the father from the first. It was seen to protrude its head from the 

 pouch and nibble at the grass while the mother was feeding. 



Asymmetry of Caudal Poles of the Cerebral Hemispheres in Man,** 

 G. Elliot Smith deals with this subject and with its influence on the 

 occipital bone. The area striata is described, and its relations to the 



* Anat. Anzeig., xxxi. (1907) pp. 399-407. 

 t Atti (Rend.) R. Accad. Lincei Roma, xvi. (1907) pp. 292-6. 

 X Anat. Anzeig., xxxi. (1907) pp. 369-99 (46 figs.). 

 § Tom. cit., pp. 1-11. || Op. cit., xxx. (1907) pp. 580-8 (10 figs.), 



f Amer. Nat., xli. (1907) pp. 724-5. 

 ** Anat. Anzeig., xxx. (1907) pp. 574-8 (3 figs.). 



