Ixiv Journal of Comparative Neurology. 



cerebellum, chiefly in the vermis, and connect the nuclei of the 

 cranial nerves with the cerebellum. The fillet connects the cerebellum 

 with the pons, the quadrigeminum and perhaps the striatum. The 

 dorsal longitudinal bundle joins the fillet about the level of the olive, 

 and both go into the antero-lateral tracts, and probably are thus con- 

 nected directly with the ventral horn and indirectly with the ventral 

 roots.' On p. 82, a drawing of the pons, ' modified from KoUiker,' 

 shows a fillet extending from the raphe to the ' medipeduncle,' sepa- 

 rating widely the trapezium and the superior olive. On p. 84, the 

 lateral medullary tract (containing Gower's tract) is said to enter 

 partly the lateral fillet. On p. 85, we find under the heading 

 ' arcuate or arciform tracts ': 'internal arcuate fibers constitute the 

 discussation of the fillet; others from the clavate and cuneate nuclei 

 pass through the dorsal longitudinal bundle and inferior olive to 

 the fillet and restiform body of the opposite side.' On p. 87, the 

 paragraph ' The lemniscus or fillet ' contains only these data : ' It 

 is divided into 3 parts, a division which probably goes to the par- 

 ietal and limbic cortex and hence has been called the cortex lemniscus 

 tract ; another subdivision which goes to the pregeminum and to the 

 thalamus ; and a lower lateral division which passes to the post gemi- 

 num. It is a part of the great sensory tract, which is in the most ven- 

 tral portion of the tegmentum. On its way brainward it gathers in 

 the fibers which come from or go to the cell-nests of those cranial 

 nerves which have sensory function.' This is all the student can hunt 

 up on this important system. 



So far the anatomical part. The part on architecture and gen- 

 eral physiology, largely illustrated from van Gehuchten's work, might 

 be more happily sketched. 



The second chapter, on general pathology and etiology etc., is 

 very brief in its neurological part ; but gives long descriptions of all 

 the possible instruments and, at the end of a rather full materia med- 

 ica, 87 formulas with the customary and the metric weights. The part 

 on pathology does not fulfill the expectations aroused by the first sen- 

 tence of the preface. About all the work of the last 5 years seems to 

 have been done in vain. The primary lesion in locomotor ataxia is 

 attributed to the spinal ganglia. All the possible attributes of inflam- 

 mation, degeneration etc., are enumerated, but what they are seems 

 to be unimportant. I refer for instance to p. 127, where the various 

 kinds of degeneration are 'explained.' The paragraph on phagocytosis 

 is illustrated by a drawing from Obersteiner, in which pericellular 

 spaces contain 'leucocytes.' The last few years have furnished fair 



