tl. 8i ^n**TTrf tlMirtu With the Compliments of the Author, 



OAHDJi^ 



ON THE 



YOUNG STAGES OF SOME OSSEOUS FISHES. 



I. Development of the Tail. 



y^-i^-y^^ 



By ALEXANDER AGASSIZ. 

 11. < 



[From the Proceedings of the American Academy of Arts akd 

 Sciences, Vol. XIII.] 



