498 



SCIENCE. 



[N. S. Vol. XXIV. No. 616. 



tion of the work treats of the superior sys- 

 tematizations of the brain, comprising visual, 

 auditory, tactile, olfactory and gustatory in- 

 nervations. The chapter on language and 

 ideation, together with the cerebral localiza- 

 tions of language and of the aphasias is par- 

 ticularly noteworthy. The phenomena of 

 sleep, hypnotism, dissociations of personality, 

 spiritualism and other topics belonging to the 

 borderland between physiology and psychology 

 are briefly defined in terms of physiological 

 functions. 



The work embodies the latest real advances 

 in our knowledge of the nervous system with- 

 out being burdened by superfluous references 

 to trivial points of controversy. Each chap- 

 ter is followed by a fairly extensive classified 

 bibliography and the translator's work is prac- 

 tically faultless. The illustrations have been 

 selected with care and are neither too few nor 

 too many in number. The work will surely 

 commend itself to both the physiologist and 

 the practical neurologist. 



Edw. Anthony Spitzka. 



SCIENTIFIC JOURNALS AND ARTICLES. 



The July number (volume 7, number 3) of 

 the Transactions of the American Mathemat- 

 ical Society contains the following papers: 



M. Mason : ' On the boundary value problems 

 of linear ordinary differential equations of second 

 order.' 



M. W. Haskell: 'The resolution of any col- 

 lineation into perspective reflections.' 



L. E. Dickson : ' Linear algebras in which divi- 

 sion is always uniquely possible.' 



J. E. Weight : ' Correspondences and the theory 

 of groups.' 



E. Kasneb : ' The trajectories of dynamics.' 



E.. MoBKis : ' On the automorphic fvmctions of 

 the group (0, 3; l^, k, k) .' 



R. G. p. RiCHAEDSON : ' Improper multiple in- 

 tegrals.' 



The opening (October) number of volume 

 13 of the Bulletin of the American Mathemat- 

 ical Society contains the following articles: 

 ' Criteria for the Irreducibility of Functions 

 in a Finite Field,' by L. E. Dickson; ' On the 

 Theory of Equations in a Modular Field,' by 

 L. E. Dickson ; ' Notes on the Variation of the 



Definite Integral,' by JST. J. Lennes; 'A Note 

 on Transitive Groups,' by W. A. Manning; 

 ' Differential Geometry of n Dimensional 

 Space ' (Review of Guichard's Systemes triple- 

 ment indetermines et Systemes triple-ortho- 

 gonaux), by L. P. Eisenhart; Shorter Notices 

 (Macfarlane's Bibliography of Quaternions 

 and Allied Systems of Mathematics, by H. E. 

 Hawkes; Echol's Elementary Text-book on the 

 Differential and Integral Calculus, by M. W. 

 Haskell; Cattell's American Men of Science, 

 a Biographical Directory, by G. A. Miller) ; 

 Notes; New Publications. 



The American Naturalist for September 

 contains 'the following articles : ' Histogenesis 

 of the Retina,' by A. W. Weysse and W. S. 

 Burgess; 'Notes on Marine Copepoda of 

 Rhode Island,' by L. W. Williams; and 

 ' Lichens of Mount Monadnock, New Hamp- 

 shire,' R. H. Howe, Jr. The first paper is 

 based on a study of the retina in the chick, is 

 fully illustrated, and shows, among other 

 things, that there is a large amount of indi- 

 vidual variation in the rate of development of 

 the retina as a whole, and also of its com- 

 ponent parts. Mr. Williams, in his paper, 

 records twenty-six species of copepods, three 

 of which are described as new. Mr. Howe 

 records no less than seventy-one species of 

 lichens from Mt. Monadnock. 



The Museums Journal of Great Britain for 

 August contains an abstract of the Bristol 

 meeting and a detailed history of the Bristol 

 Museum and Art Gallery, by Aid. W. R. 

 Barker. The next meeting of the association 

 will be held at Dundee. 



DISCUSSION AND CORRESPONDENCE. 

 CATS AS PLANT INVESTIGATORS. 



It has taken half a lifetime for Americans 

 to discover the delicious qualities of the 

 pomelo, but it has taken the cats of Boston 

 only six months to appreciate a new cat 

 delicacy. 



Professor Sargent, of the Arnold Arbore- 

 tum, near Boston, imported from Central 

 China a new vine, only a few plants of which 

 were securable. As the species (Actinidia po^:^- 



