Wilder, Neural Terms. 253 



paronymization, snlc and sulaises being both somewhat un- 

 acceptable. 



(2). Siilais has recently been employed by Mrs. Gage 

 ('93), O. D. Humphrey ('94), P. A. Fish ('94), and B. F. Kings- 

 bury ('95), for ental (entocelian or intraventricular) depressions 

 which are less likely than the cerebral furrows to become sub- 

 jects of general interest. 



§122, (3). There is a practical difficulty that cannot be 

 ignored. Nothing in the words fissura and siilats, or in their 

 ordinary associations, serves to admonish us as to the proposed 

 distinction. Hence there is liability to misuse and confusion. 

 Many actual instances of this might be cited but the following 

 may suffice. Edinger ('95) apparently intends to 2i^f^\y fissura 

 to the total fissures, and the occipital is so designated in the in- 

 dex ; but on Fig. 33 it is called sulcus. KoUiker ("Entwickel- 

 ungsgeschichte, " p. 555) attributes sulcus calcarimis to Huxley, 

 who uses fissure as does Kolliker in the explanation of a figure. 

 ¥\owQr {^'Proteles,'' Zool. Soc. Proc, 1869) applies to the supra- 

 orbital, fissuj^a and sulcus indifferently. Huxley (" Vertebrated 

 Animals ") says that the cerebral surface becomes complicated 

 by ridges and furrows " the gyri and sulci ;" but the first of 

 the "sulci " to be mentioned is the " sylvian fissure " and the 

 second "the fissure of Rolando," the latter also being desig- 

 nated on Fig. 21 as the "sulcus of Rolando." Flower and 

 Lydekker (Mammals, p. 71) say "the sylvian fissure is one of 

 the most constant of the sulci. In the last two cases the gen- 

 eric designation of the shallower furrows is made to include 

 both kinds, and curiously enough this usage is apparently sanc- 

 tioned by the German committee in introducing ^r/ r^n'(^r/ and 

 sulci cerebri as comprehensive names and then specifying certain 

 sulci and fissurae ; see Table VH, H, 10, 17, 26. 



§123. DENTATUM vs.. Nucleus dentahis. — Two separate 

 questions are involved in the choice between these terms : {a) 

 The use of nucleus (with a masculine adjective) in place of 

 corpus (with a neuter) ; {b) The employment of an adjective of 

 either gender as a substantive. The latter is considered in con- 

 nection with collosuni and dura (§§i i i-i 18). The substitution of 



