195 



bezw. im Nervenfortsatz zusammensetzenden Fäden wahrzunehmen; eben- 

 so bleibt es noch immer unaufgeklärt, was für Beziehungen zwischen dem 

 Befund Golgi's und den von anderen Autoren beschriebenen, neuer- 

 dings von Bethe mit größerer Klarheit zur Anschauuag gebrachten 

 Fibrillen in den Fortsätzen und dem Körper der Nervenzellen der 

 Säugetiere bestehen mögen. Erst durch umfangreichere Forschungen 

 wird es gelingen, auf diesem Gebiete Licht zu schaffen. 



Nachdruck verboten. 



The Peripheral Distribution of the Cranial Nerves of Aninio- 



coetes. 



By F. J. Cole, University College, Liverpool. 



Under the above title a work has just appeared by Miss R. Al- 

 cock in the Journal of Anatomy and Physiology, Vol. 33, N. S. Vol. 13, 

 Part I. That the subject is a very important one will be readily ad- 

 mitted, and that it has been carried out by Miss Alcock with care and 

 ability is obvious enough. I have no doubt whatever that her paper, 

 as far as it goes, is perfectly accurate as regards facts, but the de- 

 ductions which are drawn from those facts are for the most part open 

 to considerable objection. In the first place the literature relating to 

 the brain and nerves of the Lamprey alone is numerous though scat- 

 tered, and with this Miss Alcock is but imperfectly acquainted, and 

 has apparently overlooked several important memoirs (e. g. Leydig's 

 work in the Hall. Festschrift). Further, several important memoirs 

 relating to the lateral line system, with which Miss Alcock's paper 

 largely deals, have, it seems, not been consulted, and her conclusions 

 are hence in some measure accounted for. Although I have been 

 working at this system for some years, and have published several 

 memoirs more or less relating to it 1 ), I may be permitted to criticise 

 Miss Alcock's paper more from a general standpoint than from that 

 which I happen to affect myself. 



Miss Alcock re-describes several series of epidermal pits fouDd in 



1) Proc. Royal Soc. Edinburgh, 1896, Vol. 21, p. 49—56, and 2) 

 Vol. 20, 1895, p. 475—480; 3) Anat. Anz., 1896, Bd. 12, S. 172 — 182; 



4) Trans. Royal Soc. Edinburgh, 1896, Vol. 38, p. 631—680, PL I— II; 



5) Trans. Liverpool Biol. Soc., 1898, Vol. 12, p. 228—247; 6) Trans. 

 Linnean Soc. London, Ser. II, Zool., Vol. 7, October 1898, p. 115—221, 

 PI. 21—23. 



