Literary Notices. 1 63 



the corpus callosum, beginning in the lamina terminalis, expands 

 into its adult relations by intussusception of new fibers, and not by 

 actual coalescence of the hemisphere walls. o. e. c. 



Lewis, Warren Hermon, Experimental Studies on the Development of the 

 Eye in Amphibia. I. On the Origin of the Lens. T/ie American Jour- 

 nal of Anatomy, 3, 505-536, 1904. 



In this communication Lewis reports a series of experiments upon 

 the embryos of Rami palustris and R. syivatica, in which the optic 

 cup was severed from the brain and removed from its normal position 

 before any fundament of the lens had appeared. The author inter- 

 prets his experiments as proving that contact between the optic cup 

 and the skin is necessary for formation of the lens, and that the power 

 to take part in lens-formation is not restricted to any particular region 

 of the skin or optic cup. These facts, he believes, are "entirely in 

 opposition to Weismann's theory ot determinants." g. e. c. 



Levi, Guiseppe. Ueber die Entwickelung und Histogenese der Ammonshorn. 

 formation. Arch. f. mik. Anat., 64, Heft 3, 389-404, I PL, 1904. 



The chief cause of the rolling in of the cortex in the Ammons- 

 horn is the atrophy of the medial wall of the hemisphere in the re- 

 gion of the plexus chorideus. j. b. j. 



Scaffldi, Vittorio. Ueber den feineren Ban und die Funktion der Hypophysis 

 des menschen. Arch. f. mik. Anat., 64, Heft 2, 235-255, i PI., 1904. 



Two kinds of cells are present, distinguished by their staining 

 properties, each of which probably produces a definite substance which 

 helps to form the secretion of the gland. j. b. j. 



Kamon, K. Ueber die "Geruchsknospen." Arch. f. mik. Anat., 64, Heft 4, 

 653-664, I pl-, 1904. 



Esox, Trigla and calf. Sublimate ci aJ.\ iron haematoxyliu; 

 Golgi and methylene blue; maceration with 0.05% chromic acid. 

 Figures from haematoxyliu sections support the conclusion, "Es giebt 

 weder in der Ceruchschleimhaut der Fische noch der Sanger Bildun- 

 gen. mit den Geschmacksknospen verglichen werden konnen." 



J. B. J. 



Heath, Harold. The Nervous System and Subradular Organ in two Genera 

 of Solenogastres. Zool. Jahrb., Ahth. f. Anat. u. Ontog., 10, Heft 3, 399- 

 408, I pl., 1904. 



General description nf the nervous system. j. b. j. 



Rubaschl<in, W. Studien iiber Neuroglia. Arch. f. mik. Anat., 64, Heft 4, 

 575-626, 4 pis., 1904. 



Cat. Staining with methyl violet after special method of fixa- 

 tion. Description of types of glia elements with classification accord- 



