CONTENTS. 
LETTER XVII. 
Page 
Parts of Fishes. . Head, Eyes, Jaws, Teeth, Palates, Proboscides, Scales, Bones, &c 253 
LETTER XVIII. 
Entoniolithi. .Insects in Pappenheim Limestone. .In Coal Slate. . Crabs of Shepey, Verona, East 
Indies, and Maestricht. .Oniscites. . Monoculites. . Trilobites .. .. .. •• •• •• 2f >5 
LETTER XIX. 
Amphibiolithi. . Tortoise. . Crocodile .. .. .. .. .. .. .. .. ... 277 
LETTER XX. 
fossil Crocodiles. . Two Species found in France, differing from any known Species. . Fossil Species 
found also in England . . . . . . . . . . . . . . . . . . . . . . 288 
LETTER XXL 
Large Fossil Animal of Maestricht. .Ascertained to be neither Physeter, Fish, nor Crocodile. .Opinions, 
of Dr. Peter Camper, M. Faujas, M. Adrian Camper, &c... Remains of the existing Monitors.. 
English Specimens .. .. .. .. .. .. .. .. .. .. .. 298 
LETTER XXII. 
Ornitholites .. .. .. .. .. .. .. .. .. .. .. 3I4 
LETTER XXIII. 
fossil Remains ot Mammalia.. Cetacea, Whales, &c. .Amphibia. .Trichecus, Seals, &c. . Solipedes, 
the Horse 
LETTER XXIV. 
Fossil Remains of Ruminantia. . Fossil Elk of Ireland. .Stags, &c. .Ox, Buffalo, Auroch, &c. . . 325 
LETTER XXV. 
Fossil Bones of Ruminants, &c. in the Islands of Cherso and Osero. .Island of Cerigo. . At Nice and 
Antibes. .At Cette. .Near Concud, in Arragon. . In the Rock of Gibraltar 341 
LETTER XXVI. 
Fossil Remains of Elephants.. Frequently found.. Manifest the Existence of one or more Fossil Species 351 
Mastodon 
LETTER XXVII. 
364 
LETTER XXVIII. 
Fossil Remains of the Rhinoceros. .Fossil Animal different from the recent Species. .Hippopotamus 
Fossil Remains.. Small Fossil Hippopotamus, an unknown Species. .Fossil Animals approaching 
to the Tapir 
