APPLICATIONS OF THE MICROSCOPE. 91 



ment, he himself states, could have conducted 

 him to some of his most remarkable discoveries. 

 By the Microscope alone, it was determined 

 that the Sandstone of Warwickshire, and the 

 " Keuper-Sandstein" of Wirtemberg, were equi- 

 valent formations. 1 By the Microscope, it was 

 determined that the teeth in the " Keuper- 

 Sandstein," supposed by Jaeger to belong to a 

 Saurian reptile, by him named Mastodonsaurus, 

 or Pliytosaurus, were really the same as those 

 in the Trias of Warwickshire ; that they had 

 belonged to a primeval gigantic Batrachian a 

 frog-like animal of five or six feet long to 

 which, from its extraordinary teeth, the name 

 Labyrintlwdon was given ; and that this Laby- 

 rinthodon might almost to a certainty be re- 

 garded as the Clieirotherium of the Trias in the 

 Stourton quarries of Cheshire, whose strange 

 footprints had so long exercised the skill and 

 ingenuity of the Palaeontologist. 2 By the Micro- 

 scope, the Basilosaurus, once the acknowledged 

 monarch of the Saurian tribes, has been de- 



1 Carpenter on the Microscope, p. 758. 



2 Owen's Odontography, vol. i. pp. 196, 217 ; Lyell's Ele- 

 ments, pp. 335-342 ; Morris's British Fossils, p. 350 ; Carpen- 

 ter on the Microscope, p. 758. 



