Meyer, Data of Modem Neurology. 291 



the English language ; but it is not written from a stand-point 

 which would keep in view the whole field of neurology, genetic, 

 comparative, physiological and pathological, because it is forced 

 into the frame of an 'anatomy.' The work in physiology done 

 by Schaefer has only the remotest contact with that anatomy. 

 Horsley and Gotch, in their remarkable conjoint study come 

 probably next to methods of precision in detailed anatomy with 

 purely physiological methods. 



What V. Guddenand his pupils had long foreseen and done, 

 has become more fashionable since the introduction of Weigert's 

 medullary stain and especially the popularization of Marchi's 

 method. There, in the production and study of lesions with 

 secondary degeneration, is the beginning of physiological anat- 

 omy. It is on ground of these methods that the plan of archi- 

 tecture ot the nervous system given in the second chapter has 

 its foundation. Further elements are furnished by com- 

 parative anatomy combined with the degeneration method, and 

 by the method of embryology and study of later development 

 in man and animals (methods of His and Flechsig). Side by 

 side with this are, of course, the physiological observations. 

 The fact that the neurone-theory grew partly out of this combi- 

 nation of neurological methods, and finds its natural home in 

 them, is one of the reasons why the Golgi-method should not be 

 praised as the backbone of modern neurology in the customary 

 exclusive fashion. That neither the ' neurone-theory ' nor the 

 Golgi method can bring exclusive salvation in neurology, has 

 been shown by the third member of the great trio of Swiss 

 neuro-histologists. Prof. KoUiker in VViirzburg, who felt himself 

 justified in opposing the non-decussation of part of the optic 

 fibers on purely histological ground. 



The great progress achieved through the present revival of 

 histological research consists in the intimate union between so 

 many methods and stand-points. The scalpel-physiology gives 

 way to embryological, developmental, comparative, experi- 

 mental and pathological histology and physiology and instead 

 of centers of the old types, mfchanisnis are being unveiled and 

 the deductions are more closely physiological than * psycho- 



