334 BIOLOGY AND ITS MAKERS 
Agassiz visited Paris, Cuvier placed his collections at Agassiz’s 
disposal, together with numerous drawings of fossil fishes. 
The profusely illustrated monograph of Agassiz on the fossil 
fishes (1833-1844) began to appear in 1833, the year after 
Fic. 99.—Lovis AGassiz, 1807-1873. 
Cuvier’s death, and was carried on eleven years before it was 
completed. 
Agassiz, with his extensive knowledge of the developmen- 
tal stages of animals, came to see a marked parallelism 
between the stages in development of the embryo and the 
successive forms in the geological series. This remarkable 
parallelism between the fossil forms of life and the stages 
