CONTENTS OF VOL. II. hi 
Class IV.  Infusoria. 
Page. 
Order I. With external organs. Cercaria, Furocerca, 
Trichoda, Kerona. : : . 618 
Order II. Without external organs. Monas, Volvox, 
Bursaria, Kolpoda, : . . 618 
EXPLANATION OF THE PLATES. 
(The Binder is desired to place all the Plates at the end of Vol. f.) 
PLATE I, 
Fig. 1. Plecotus auritus or Long-eated Bat, vol.i. = 176 
— 2. Tusks and grinders of the Badger. a, Inside 
view of the teeth of the upper jaw. 6, A similar 
view of the teeth of the under jaw, - 181 
— 3. Common Seal. a, Hind-feet and tail viewed dor- 
sally. - - = 186 
— 4. Common Porpess. 209 
5. Leeth of —— -—. ‘a, One fom the middle of the 
lower jaw. 6, One from the middle of the ue 
per-jaw. ib. 
— 6. Milk tusk of the Common Nenewrade: “ 210 
PLATE II. 
— 1. Colymbus Troile, with the bill open, to exhibit 
the notch, 262 
— 2. Bones of the wing sik the Carncrake, acess 
of the method of amputating portions of that or- 
gan in wounded birds, - 265 
PLATE III. 
—— 1. Clupea alosa or Shad, - 385 
— 2. Rhombus punctatus, - 388 
