xxxvi Journal of Comparative Neurology. 



knife moistened with alcohol. The various methods of attaching sections 

 without a distinct adhesive substance seem to be untrustworthy for large 

 or wrinkled sections. The method of attaching by arranging on a chem- 

 ically clean slide and then flowing with 70 (if alcohol and setting aside 

 in a drying oven for several hours, melting paraffin and proceeding as 

 usual, will frequently succeed, but has not proven satisfactory for series. 

 The method of floating the ribbon upon the surface of warm water and 

 lifting on a slide, leaving to dry in the oven, etc., is not reliable, but some 

 modification of it, such for example as covering a long ribbon of silk 

 paper with syrup of sugar and de.xtrine, permitting to dry, then floating 

 the section ribbon on warm water, lifting them quickly on the paper 

 band, leaving to dry, covering with photoxylin or celloidin, afterward 

 dissolving the sugar followed by the usual after treatment, promises 

 well. 



Paladino has recommended the treatment of spinal cord after chromic 

 acid or sublimate with a solution of chloride of palladium i : looo (slightly 

 acidulated) for two days and staining for a day or so in 4 '-J, iodide of 

 potassium. 



O^r^^a renders Golgi preparations more permanent by substitution of 

 gold for the silver. After sections treated as usual are passed into absolute 

 alcohol they are brought into absolute alcohol and gold chloride and 

 fixed in 10 r/, hyposulphate of soda and subsequently washed in water. 



A very useful variation of the hsematoxylin method given in the 

 December number ot this journal for those cases in which the hsematoxylin 

 remains too distinctively a nucleus stain is the addition of a small quanity 

 of acid fuchsin or the washing after the hsematoxylin with very dilute 

 fuchsin. The protoplasm is colored in cases where the hsematoxylin fails 

 (as in Amphibian brains). It is true that the blood vessels and the con- 

 nective elements are also stained but in many cases the second stain is 

 very useful by contrast. It is in our opinion better than carmine as an 

 adjunct with hsematoxylin and seems permanent. 



RECENT LITERATURE. 



Adamkiewicz. Zur Orientirung an der Gehirnoberflache des leben- 

 den Menschen. Intern, klinische Rundschau. V, 46, 1891. p. 1803.1806. 



Adamkiewicz. Apoplektischer Anfall. Wiener Akadem. Sitzber. 

 C. Abth. III. 



