Literary Notices. xi 



"Briickenfasern." A longitudinal tract of uncertain origin out of the 

 medulla, the "ZiEHEN'schen Bundel," joins the "Bindearm." The 

 nervus cochlearis, the superior olive and the "Trapezfasern"' are ex- 

 ceedingly reduced in Ornithorhynchus while they are well developed 

 in Echidna. The corpus quadrigeminum distale and the nucleus lem- 

 niscus lateralis, also, are larger in Echidna than in Ornithorhynchus. 

 In the pons of Echidna, and especially in Orhithorhynchus, are 

 "dorso-ventral" fibers appearing to rise partly from the fasciculus long- 

 itudinalis dorsalis and partly from the nucleus of the pons. A "fasci- 

 culus longitudinalis medialis" connects the ganglion interpedunculare 

 with the ganglion tegmenti dorsale. 



This monograph is presented in beautiful form and is precise and 

 thorough in treatment. It is a valuable contribution to the morphology 

 of the monotreme brain. G. E. coghill. 



Polish Archives for biolog'ioal and medical Sciences. 



This new periodical contains translations in French or German of 

 scientific memoirs in the Polish language which appear simultaneously 

 either in the Polish edition of the Archives or in other Polish publica- 

 tions. It also contains a bibliography as complete as possible of all 

 works or articles on biological and medical subjects appearing in the 

 Polish language, together with both French and German translations of 

 their titles. The first number of the French and German edition con- 

 tains 252 pages with several plates and is very commendable both in 

 matter and form. The Archives are edited by Professor H. Kadvi 

 and a large staff of collaborators; published at Lemberg at M. 40 (50 

 francs) per volume. 



Micro-chemistry of Nerve Cells.' 



A careful study of the micro-chemistry of nerve cells leads the 

 author to the conclusion that there are at least three distinct nuclein 

 compounds in nerve cells, the NissL granules, the basophile substance 

 covering the nucleolus and the oxyphile substance of the nucleus. 

 Each of these bodies contains iron and phosphorus, the usual constit- 

 uents of many nucleo-proteids. The three compounds above men- 

 tioned are genetically related, a study of developmental stages showing 

 that they are derived from the chromatin of the nucleus of the germi- 



^ Scott, F. H. On the Structure, Micro-chemistry and Development of 

 Nerve Cells, with special Reference to their Nuclein Compounds. Trans. Cana- 

 dian 'Institute, VI, 1898-Q9. 



