Mat 8, 1908] 



SCIENCE 



739 



original as to the concomitant increase of the 

 conducting fibrous constituent. 



Page 203 — The original of the following 

 sentence is characteristically German, but it 

 might have been rendered into more straight- 

 forward English : " A series of unpaired ven- 

 tricles lying in the longitudinal axis of the 

 brain, as well as paired ventricles, can be dis- 

 tinguished." 



Page 204 — Without the figure that surely 

 should have accompanied this very brief ac- 

 count of the brain of the lowest vertebrate an 

 imperfect idea would be conveyed by the 

 phrase, " kegeKormigen Auftreibung," ren- 

 dered "conical and enlarged." The presence 

 of an olfactory bulb, mesal at its base, but 

 deflected to the left, never would be inferred 

 from the statement that " the brain cavity 

 opens freely to the exterior dorsally by a 

 neuropore." In the previous English edition 

 -this free rendering of the original is properly 

 qualified by the phrase, " in the larva," the 

 omission of which from the present volume 

 ■conveys an error as radical as would be em- 

 bodied in the declaration, " man has a short 

 ■triangular tail," without the qualification, " at 

 a certain stage of development." 



Page 210 — The account of the selachian 

 iorebrain is not clear as to either the develop- 

 mental stages or the various adult conditions ; 

 see also the commentary upon Eigs. 15Y and 

 158. 



Page 213 — As to the olfactory bulbs of tele- 

 osts, the original merely remarks (p. 249) in 

 effect that they may be either sessile or pe- 

 dunculate. The adaptation says " they are 

 either closely applied to the telencephalon 

 [forebrain] and contain a small ventricle, or 

 they become differentiated into tract and bulb, 

 as in elasmobranchs [selachians]." In the 

 absence of any representation of the alleged 

 olfactory ventricles the reviewer, recalling the 

 artifact figured by him in the perch (A. A. 

 A. S., Proceedings, 1875, PI. 3, Eig. 14), ap- 

 prehends that they may be as insignificant as 

 those discussed the following year (p. 258), 

 and scarcely deserving of the title; certainly, 

 in neither form is there a patent cavity as in 

 sharks and rays. 



Page 214— The teleostean cerebellum is by 

 no means always " extremely large " ; and 

 while in some, as the salmon (Eig. 160), it is 

 " bent upon itseK and overlies the medulla 

 oblongata," in others, e. g., perch, it is erect, 

 and in still others, e. g., catfish, it tilts for- 

 ward upon the midbrain. 



Page 227 — The midcommissure may be 

 " large " in most mammals, but in man it is 

 notably small. 



Page 228 — In both the original and the 

 adaptation it is assiuned that the carnivoral 

 cruciate fissure is homologous with the prima- 

 tial central or Eolandic, but their comparable 

 relation to the chief motor areas of the cortex 

 by no means proves their morphologic identity. 



Page 236. — In connection with the ordinary 

 cranial nerves the original devotes two figures 

 and the larger portion of pages 276 and 277 

 to the new " Nervus terminalis " of Locy 

 (Science, Aug. 11, 1905, and earlier papers 

 there cited). This was none too much in the 

 opinion of the reviewer, whose appreciation of 

 what he regards as an " epoch-making " series 

 of observations has been briefly expressed in 

 Science, May 26, 1905, p. 813. Yet the sub- 

 ject is disposed of in the present volume in a 

 foot-note of six lines ; the words " in the region 

 of " are superfluous and misleading in respect 

 to both the origin of the nerve in the terma 

 (" lamina terminalis ") and its distribution to 

 the olfactory mucosa; worse yet, through a 

 misprint for Amda (Amiatus) which does 

 not occur in the original, the adaptation cred- 

 its the nerve to the Anura, notwithstanding 

 Locy's declaration that he searched for it in 

 vain in the frog and toad. 



Eig. 145 — The uniform line between the 

 two halves of the frog's brain fails to indicate 

 the exceptional coalescence of the olfactory 

 lobes, and there is no reference to the later 

 figure, 164, B. In some respects Ecker's fig- 

 ure (145) is less satisfactory than those pub- 

 lished in 1853 by Jeffries Wyman, apparently 

 unknown to both author and adapter. 



Eig. 148 — Without challenging the useful- 

 ness of this schema of the three primary 

 " cerebral vesicles " (enceplmlic is the natural 

 equivalent of " Himbliischen " as well as more 



