Literary Notices. cxiii 



The author substantiates Westphal's localization of the patella-reflex 

 fibres. 1 



Respecting the dorsal cornua the author concludes that in uncompli- 

 cated cases of tabes only those parts which are known to be connected 

 with the dorsal nerve roots degenerate. 



Full references to literature accompany the paper. 



A Method of Making Paraffin Sections from Preparations 



STAINED WITH Me.N'THYL BlUE.2 



The difficulties in the way of making permanent preparations of ma- 

 terial stained by Ehrlich's method seem to be in part overcome by the 

 method described. As applied to the nervous system of the crayfish, one 

 tenth of a cubic centimeter, or less, of a 2 per cent, solution of methyi- 

 blue was injected into the ventral blood sinus and, after fifteen hours, 

 (the animal being kept alive meanwhile in an aquarium) the tissues were 

 placed in corrosive sublimate. By the action of the sublimate, the blue 

 becomes a uniform fine-grained purple precipitate. The routine is as fol- 

 lows : 



1. Cold, saturated, aqueous solution of corrosive sublimate, for lo 

 minutes. 



2. Solution A: methylal, 5 cm. and corrosive sublimate i gr., for 15 

 minutes. 



3. Solution B: methylal, i vol., solution A, i vol., xylol, 2 vols., 

 for 10 minutes. 



4. Pure xylol, 4 or 5 days. 



5. Imbed in paraffin and section. 



6. Fix with schallibaum's collodiura and mount in xylol balsam. 



Huber's Method of Rendering Golgi Sections Permanent. ■' 



After hardening in the way recommended by Golgi and Koelliker 

 and sectioning in celloiden under 95 per cent, alcohol, the sections were 



1, "Das ueberall da, wo das Kniephaenomen fehlt, im Uebergang des untereii 

 Brustmarkes zum Lendenmarke eine Zone der Hiuterstraenge erkrankt seiu muss, die 

 begrenzt wird durch eine Linie, welche man sich dena hiiitern Septum parallel durch 

 den Punkt gezogen denkt, in vvelchem die das Hinterhorn bekleidenden substantia 

 gelatinosa nach innen zu einen kniek bildet ; nach hiiiten blldet die Peripherie des 

 Bueckenmarkes die Grenze " 



2, P.1RKER, E. H. Zoologisoher Anzelger, XV, 4(W. 



3, HuRER, G. Cabl. Zur Technique der Golgi'schen Faerbung. Anat. Anzei- 

 ger, VII, 18. 



