630 ZOOLOG Y. 
of large subjects for better facility in dissecting. A small sharp- 
pointed narrow-bladed scalpel, besides a large one, curved, as well as 
sharp-pointed scissors are useful, with « German silver blow-pipe 
for temporarily distending vessels; and also a blunt-pointed copper 
wire or probe made for surgeon’s use, will be necessary. All these in- 
struments, put up in a compact box, can be purchased at the surgical 
instrument maker’s, as well as syringes for injecting the circulatory 
organs and vascular parts of the viscera. 
TABULAR VIEW OF THE E1rGHt CLASSES OF VERTEBRATES. 
wh 
be 3 
5 s 4 
2 g 
te on as 
| s mn 
| SS 
4 §& er: 
30—CtC«‘d@@W gS gf 
: ee) 4 & 
6g g 4 
<<  §& QM  @ 
a 4 ,  &§ 
re cal 
4 a 06, 
4 
F fF 6 6g 
B ¢ # ¢ 
. § 8 4 
oc ¢ 6k 
— 2 2 J 
a % @ 
SOR & 
Aa f 
- 
III. Marsrroprancuit.—Lampreys. 
Sup-Brancu III.—CRANIOTA. 
Sus-sranon II.—ACRANIA. I. Leprocarpm (Lancelet). 
Susp-Branco I.—UROCHORDATA. I. Tunrcata. 
