76 Biographical Notice of Alcide D’Orbigny. 
om observation. 
I shall not attempt further to follow the able author of no leg 
than fifty distinct treatises, some of vast magnitude and interest 
and all full of ingenuity and knowledge; but I may notice 
as the author of that nomenclature which is gaining groum 
rapidly; and in doing so I will quote, as illustrative of - 
method, the distribution of the Bryozoa-Cellulina, which 
thus details :— 
Genera. Species. 
Etage Néocomien... 1 ...... 
Pea! —_— a ae ty: 5 are 1 : 
errains —_— Wien. ; oes : ae gd 1 pecies. 
rétacés, ——-. Cénomanion..3 21} «cis 26 a pi 
~w Turomen: ig ees coc, fe 
—  Bénonieh:. 30 oc. 547 
Etage Suessonien.... 8 ...... 5 
Terrains aie Davieeiee, f24 82 ee. 24 109 
Tertiares. } —  Falunien..... 40.22... 75 
— Subapenin ... 4 ..... eees 
