cviii Journal of Comparative Neurology. 



The M. levator veli palatini is innervated from the lower fibres 

 of the middle root-bundle (not from the upper fibres as stated in the 

 earlier paper). In their peripheral course these fibres maintain their 

 union with the vagus, passing out as the upper twig of the R. pharyn- 

 geus vagi. They are not associated with the accessorius, as stated by 

 Beevor and Horsley. 



The nerves for the constrictors of the throat arise in the middle 

 root-bundle and pass out in the R. pharyngeus vagi. Those for the 

 M. palato-pharyngeus constitute the middle part of the lower division 

 of the same ramus, while those for the M. palato-glossus pass out in 

 its upper division. 



The studies were made on dogs, cats, rabbits, Macacus, etc. 

 Both this paper and the earlier one are accompanied by copious bibli- 

 ographical citations. 



Association-bundles of the Cerebral-mantle. 1 



The fibrcz arcuatcz of the mantle rest upon an oblique layer of 

 longer association-bundles. 



The fasciculi uncinati are but the anterior portions of a system 

 of association-bundles which extend from the cephalic end of the 

 mantle, above the sylvian fissure into the parieto-occipital and tempo- 

 ral regions of the mantle. 



The radiations of the fasciculus arcuatus are but a superficial con- 

 tinuation of the association-bundle which begins in the transition con- 

 volution ( iibergangswindung ) of the medulla and curves around the 

 sylvian fissure into the cerebrum. From it fibres branch to the parie- 

 tal, occipital and temporal regions. 



Through the medium of the anterior commissure there is a de- 

 cussating association of the olfactory with the occipital cortex. 



Through the union of the fasciculus arcuatus with the lower layer 

 of the oblique bundles of the callosum all those cortical regions which 

 are associated through the medium of the fasciculus arcuatus are con- 

 nected by the callosum with some not-yet-determined portion of the 

 other hemisphere. 



Two facts, at least, militate against the assumption that by means 

 of the callosum physiologically similar portions of the two hemispheres 

 are forced to function simultaneously : ist, the centers for speech and 



lr THEODOR Meynert. Neue Studien iiber die Associationsbundel des Hirn 

 mantels. Sittungsberichte d. Kaiserlichen Akademie der Wissenschaften, Wien. 

 Bd. CI. (1892) p. 361-379; Taf. I-IV. 



