Contents xi 



pathways, and thus may be applied for the study of the course of 

 degenerated pathways in the central system. Can be used for deter- 

 mining the number of medullated fibers in a pathway or nerve. The 

 method may be applied to material preserved in formalin 69 



XII. Marchi's Method. 



A differential method for degeiierating medullated nerve-fibers. Can 

 be applied for the study of the course and distribution of medullated 

 fiber-tracts after lesions. Applicable to peripheral nerves as well as 

 to the central system. Also differential for fatty degeneration of nerve- 

 cells and blood vessels - 75 



XIII. Stroebe's Method. 



A method devised for the study of the processes of degeneration and 

 regeneration of medullated fibers in the peripheral nervous system. 

 May also be applied for the processes of degeneration in the central 

 system. A good general method for sections of the spinal cord 79 



XIV. Weigert's Method for Neuroglia. 



A differential: stain for neuroglia, showing the relations between the 

 neuroglia fibers and the neuroglia cells. Especially applicable to 

 human tissue, adult preferably 83 



XV. Mallory's Method for Neuroglia. 



An application of phosphotungstic-acid-hasmatoxylin as a differential 

 stain for neuroglia. A shorter method than Weigert's with the same 

 purpose and giving practically the same results 87 



XVI. Giacomini's Method (Modified). 



A method for making "dry preparations" of the central nervous 

 system for museum specimens 91 



XVII. The Kaiserling Method. 



A method for " wet preparations " of the central nervous system for 

 museum and demonstration specimens. Gives toughness to the speci- 

 men and preserves the normal color. Well adapted to pathological 

 specimens, whether of nervous or other tissue • 95 



XVIII. Methods for the Treatment of Embryos. 



Some suggestions as to the fixation and preservation of human embryos 



and foetuses 97 



XIX. Formalin for Purposes of Dissection. 



An application of formalin for the fixation and preservation of speci- 

 mens for dissection. May be applied to the whole or any part of the 

 animal for the dissection of any of its tissues, but is especially adapted 

 to the central nervous system 103 



Directions for the removal of the central nervous system 105 



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