TO 



WILLIAM M. GABB, A. M. 



PALAEONTOLOGIST TO THE STATE OF CALIFORNIA. 



MEMBEB OF THE ACADEMY OF NATURAL SCIENCES OF PHILADELPHIA, 



THE BOSTON SOCIETY OF NATURAL HISTORY, 



THE CHICAGO ACADEMY, THE NEW YORK LYCEUM OF NATURAL HISTORY, 



THE ST. LOUIS ACADEMY OF SCIENCE, THE CALIFORNIA 



ACADEMY OF NATURAL SCIENCES, 



SAN FRANCISCO, ETC. ETC., 



Tffo8s MttB© \#0,lU!ID© 



IS AFFECTIONATELY INSCRIBED AS A SOUVENIR OF 



FRIENDSHIP, AND AS A TRIBUTE OF RESPECT, 



FOR HIS VALUABLE RESEARCHES TN 



FOSSIL CONCIIOLOGY. 



