July 21, 1911] 



SCIENGW 



87 



acters,'" and while predisposed toward a re- 

 duction of the interval between the two great 

 divisions of teleostome fishes, I stated that the 

 olfactory bulbs contained cavities not only in 

 the ganoids named but also in the teleostean 

 genera, Perca, Scomber and Anguilla, and 

 pictured the cavity, rhinocele, in the first 

 named genus, as of considerable size and as 

 surrounded with substantial walls; (plate 3, 

 F'g. 14). Later observations showed that this 

 cavity was an artifact produced by the beaded 

 bristle employed as a " seeker." 



This correction does not militate against 

 the recognition of slight depressions at the 

 base of the sessile olfactory bulbs such as 

 were described and figured by me in 1876 

 (4. A. A. 8. Proc, p. 258 and Figs. 12 and 

 13) ; much less does it contravene the repres- 

 tation of the rhinocele by a cavity having only 

 a membranous roof on the dorsal side of the 

 bulb itself when sessile, or on the dorsal side 

 of its peduncle when the bulb is located at a 

 distance from the rest of the brain. 



3. My participation, up to 18Y6, in the 

 then prevailing non-recognition of " the 

 morphologic importance of the membranous 

 or other thin portions of the parietes of the 

 encephalic cavities " has been clearly ad- 

 mitted and sufficiently regretted in a paper' 

 entitled as in the words quoted above. The 

 general remarks in that paper on self-correc- 

 tion and on the private correction of others 

 are commended to scientists generally. 



4. In the articles on the brain in both edi- 

 tions of Buck's " Reference Handbook of the 

 Medical Sciences " I systematically followed 

 the plan, then and still somewhat unusual, of 

 enumerating the defects of the illustrations. 

 Such as have been subsequently noted in vol. 

 2 of the second edition are now specified. 



(a) Fig. 670. The convexity of the albi- 

 cans should have been shaded as a retreating, 

 natural (pial) surface, as in Fig. 687. 



(b) Fig. 687. The unaccountable black 



' On the brains of Amia, Lepidosteus, Acipenser 

 and Folyodon. Amer. Asso. Adv. Science, Proceed- 

 ings, 1875, pp. 168-194. 



^ Journal of Comparative Neurology, Vol. I., pp. 

 201-203, October, 1891. 



spot in the center of the middle commissure 

 should be erased; it does not appear in Fig. 

 801, of part of which Fig. 687 is an enlarge- 

 ment. 



(c) Wherever they occur conarium and 

 epiphysis should be replaced by pinea. With 

 medicornu, medicommissure, and medipe- 

 dunculus, as Angloparonyms of the Latin 

 forms, the prefix should be mid-. 



5. My paper on " Neural Terms "" was pre- 

 pared under considerable pressure of regular 

 duties and contained many verbal errors. 

 Some of these were specified in the " Addi- 

 tions and Corrections " on p. 352. Such as 

 were detected later were enumerated on a 

 leaflet entitled " Errors and Omissions " dated 

 March 30, 1898. Copies of this leaflet were 

 distributed to recipients of reprints of the 

 paper, and others are at the service of those 

 who have files of the journal in which it ap- 

 peared. On p. 306 of the paper itself, at num- 

 ber 122, in the first and second columns, 

 " inflecta " should be inflexa. 



6. Most preserved human fetal cerebrums 

 of the third and fourth months present linear 

 depressions not found at later periods. Like 

 Cunningham and some other anatomists, up 

 to 1903, I regarded these " transitory fis- 

 sures " as normal, although my brief discus- 

 sion of them before the Association of Amer- 

 ican Anatomists^" contained the query, " Are 

 any of them merely artifacts ? " With most 

 of them the non-existence of a corresponding 

 fold of pia should have suggested that ex- 

 planation. The observations of Eetzius, 

 Hochstetter, Mall" and G. Elliott Smith"" 

 upon fresh and unaltered cerebrums showed 

 that they are truly artificial features caused 

 by either post mortem corrugation or the pres- 



" ' ' Neural Terms, International and National, ' ' 

 Journal of Comparative Neurology, VI., December, 

 1896, pp. 216-352', including seven tables. Parts 

 VII.-IX. have also been reprinted under the title 

 "Table of Neural Terms, with Comments and 

 Bibliography. ' ' 



" Proceedings, May, 1894, p. 33. 



" Amer. Jour. Anatomy, Vol. 2, pp. 333-339. 



^-Anat. Aneeiger, Vol. 24, pp. 216-220. 



