4005 ANATOMICAL TECHNOLOGY. 



applied to entire human heads or entire animals, (Wilder, GT), which should be kept at a 

 low temperature — as in an ice-chest — daring the operation. 



(3.) Starch injection (by the process described on the leaf interpolated between pp. IW 

 and 141) is to be preferred to the injection with plaster, suggested on p. 436. For permanent 

 preparations of starch-injected brains, the cut ends of all the larger vessels must be tied 

 to prevent the escape of the starch. 



(4) Injection of MWer' a Fluid. — This liquid (potassium dichromate 63 grams, sodium 

 sulphate 25 grams, water 3500 cc), stains the cinerea darker than alba, and is therefore 

 better for preserving the brain for sections in which it is necessary to distinguish alba 

 and cinerea. The brain may be hardened by simple immersion, by arterial or coelian 

 injection and immersion, or by a combination of these methods. After 10 to 40 days the 

 brain is placed in 50 per cent, and then in 75 per cent, alcohol, each for three days. It ia 

 finally preserved in alcohol of 80 to 95 per cent. 



(C) The names of certain parts. — Hippocamp (§ 1343). — In view of the considera- 

 tions presented by Spitzka {20), especially as to the probability that the occurrence 

 of hypoeampe in Vicq d'Azyr was due to the ease with which the syllable hipp, hastily 

 written, may be mistaken by a printer for liyp, the senior author has withdrawn (63, 356) 

 the term hypocampa. In the present work, therefore, in place of hypocampa, and hypo- 

 campm, hippocampus and hippocampi or hi/ppocampalis are to be employed. The English 

 paronyms hippocamp and hippocampal are to be preferred. 



Fornicolumn. — This mononymic equivalent for colwmna fornicis (§ 1207), is employed 

 by the senior author {56, 514, Fig. 54 ; 63, 327, Fig. 3). 



Fornicommissure. — This was proposed by the senior author {63, 337, Fig. 3) as a 

 mononymic designation of the mesal band of the fornix. In the cat it differs little from 

 the lateral portions, but in man its caudal portion is so thin as to be sometimes overlooked 

 entirely. It was named by Reichert, {A, Fig. 34, 35, " W^ ") commissura corporis fomids, 

 or commismr des Gewolbes (pp. 70, 158, 159). The name commissura fornicis in the present 

 work (§ 1310) should be commissura columnarum fornicis (Reichert, 70, 161, Fig. 35, 

 " TT*" ; Wilder, 63, 375, note). 



Lura. — The descriptive dionym. Foramen infundibuli (§ 1337), applied herein to the 

 orifice at the base of the brain after removal of the infundibulum, is to be replaced by the 

 mononym lura, proposed by the senior author {63, 334). 



Metepencephal, metepicode, oblongata, postdblongata and predblongata. — See (D). 

 Pala. — This name is proposed for the lamella near the tip of the medicornu, con- 

 stituting the transition between the ordinary nervous parietes of the cavity and the 

 membranes which close the rima (§ 1313). It is described and figured by the senior author 

 (56, 376, Fig. 48). 



Preoptic lobe (Lat. pr(Eopticus).—ln the first edition the cephalic pair of mesencephalic 

 lobes were called optic and the caudal pair postoptic. It seems better, as suggested by 

 the senior author (56, 177, Fig. 13) to designate the cephalic pair by the specific name 

 preoptic, and retain optic for the entire group of mesencephalic elevations, preoptic, post- 

 optic, and, in some reptiles, interoptic. 



Prosocmle (Lat. prosoc^dia).—T\v\a term, obviously correlated with prosencephnl and 

 first employed by T. J. Parker, (A ; 2), designates the entire prosencephalic cavity, 

 irrespective of its subdivision with most vertebrates into aula, portas, procceles (lateral 

 ventricles) and rhinocoeles (olfactory ventricles). In like manner, mesoccele designates the 

 entire mesencephalic cavity, whether it is comparatively simple, as in mammals, or 

 composed of a mesal iter, connected by pylas with lateral optocoeles (optic ventricles), as in- 

 Birds and anourous Amphibia. 



Supracommiasure. — This name is preferred to commissura habenarum (§ 1311). The part 



