SUCCESSION OF ANIMALS AND PLANTS. 



145 



more and more precision the true affinities of these remains 

 with the animals and plants now living, the relations of 

 those of the same period to one another and to those of 

 the preceding and following epochs, the precise limits of 

 these great eras in the development of life, the character 

 of the successive changes which the animal kingdom has 

 undergone, the special order of succession of the represen- 

 tatives of each class, 1 their combinations into distinct faunae 



secondary, and the tertiary ; after- 

 wards,six or seven (Dela Beche) ; lately 

 from ten to twelve; and now, the num- 

 ber is almost indefinite, at least unde- 

 termined in the present stage of our 

 knowledge, when many geologists 

 would only consider as subdivisions 

 of longer periods, what some palaeon- 

 tologists are inclined to consider as 

 distinct periods. 



1 The principal Monographs re- 

 lating to special classes or families, 

 are the following ; Polyps and In- 

 fusoria: MICHELIN (H.), Iconogra- 

 phie Zoophytologique, Paris, 1841- 

 45, 4to. fig. EDWARDS (H. MILNE), 

 et HAIME (J.), Recherches, etc., q. a., 

 p. 44. Polypiers fossiles des terrains 

 paleozoiques, Arch. Mus., vol. 5. 

 Monograph of the British Fossil 

 Corals, Palteont. Soc. London, 1850- 

 55, 4to. fig. LONSDALE (W.), On the 

 Corals from the Tertiary Formations 

 of North America, Journ. Geol. Soc., 

 I., p. 495 ; Sill. Journ. 2d ser. IV., 

 p. 357. McCoy (FR.), Contributions 

 to British Paleontology, Cambridge, 

 1854, 1 vol. 8vo. tig-. References to 

 all minor papers may be found in 

 Edwards and Haime's Recherches. 

 EIIRENBERG (C. G.), Mikrogeologie, 

 Leipzig, 1854,fol. fig. Echinoderms: 

 MILLER (J. C.), A Natural History 

 of the Crinoidea, Bristol, 1821, 4to. 

 fig. ORBIGNY (ALC. D'), Histoire na- 

 turelle general e et particuliere des 

 Crinoides vivans et fossiles, Paris, 

 1840, 4to. fig. AUSTIN (Tn. and 

 TH. Jr.), Monograph of Recent 

 and Fossil Crinoidea, Bristol, 4to. 



fig. (without date.) HALL (J.), 

 Palasont. of New York, q. a. GOLD- 

 FUSS (G. A.), Petref. Germ., q. a. 

 DEKONINCK (L.), et LEUON (H.), Re- 

 cherches sur les Crinoides, etc., Brux- 

 elles, 1854, 4to. fig. OWES (D.D.), 

 and SHUMARD (B. F.), Description of 

 New Species of Crinoidea, Journ. 

 Ac. Nat. Sc. ; Philad. 1850, 4to. fig. 

 SISMONDA (E.), Monographia degli 

 Echiuidi fossili del Piemonte ; To- 

 rino, 1840, 4to. fig. DES MOULTNS 

 (C.), Etude sur les Echinides ; Bor- 

 deaux, 1835-37, 8vo. fig. AGASSIZ 

 (L.), Monogr. Echin , q. a., p. 80. 

 Catalogue raisonne, etc., q. a., p. 44. 

 I quote this paper under my name 

 alone, because that of Mr. Desor, 

 which is added to it, has no right to 

 be there. It was added by him, after 

 I had left Europe, not only without 

 authority, but even without my learn- 

 ing it, for a whole year. The genera 

 Goniocidaris, Mespilia, Boletia, Le- 

 nita, Gualteria, Lovenia, Breynia, 

 which bear his name whereas they 

 should bear mine, as I established 

 and named them, while Mr. Desor 

 was travelling in Sweden were 

 appropriated by him, without any 

 more right, by a mere dash of the 

 pen, while he was carrying my manu- 

 script through the press. How many 

 species he has taken to himself, in 

 the same manner, I cannot tell. As 

 the printed work, and a paper pre- 

 sented by me to the Academy of Sci- 

 ences of Paris, in 1846, exhibit, to 

 every one acquainted with zoological 

 nomenclature, internal evidence of 



