w*B»-l CHRONOLOGICAL NOTES, 421 



exformationelitlianthracuni,"226 Binney " On the origin of coal,^^'' three 

 consecutive papers by Dr. J. D. Hooker in the Memoirs of the Geologi- 

 cal Survey of Great Britain, ^^^^ Debey, on the fossil plants of Aachen, '^^ 

 Goppert's prize essay on the formation of coal, ^^o Eaulin's " Flore de 

 PBurope pendant la p6riode tertiaire, ^^ Eobert Brown's memoir on Trip- 

 losporites,''^^ really announcing the discovery of the fruit of Lepidoden- 

 dron, and Sauveur's " V6g6taux fossiles de Belgique.'"" These works 

 were all important additions to the literature of the science, and rep- 

 resented a large amount of original research. 



The third volume of Bronn's Index Palseontologicus, namely, the 

 Enumerator, did not appear until 1849. It contains Goppert's table of 

 the vegetable fossils as known to him, arranged under their respective 

 geological formations. All the species are enumerated in systematic 

 order, but with an inconvenient appendix (pp. 5-72), and are not summed 

 up at the end. The summary is, however, introduced in another part 

 of the volume (p. 727), and shows that considerable progress had been 

 made since 1847, when linger made his synopsis in his " Chloris Pro- 

 togaea," although, as already remarked, the 1,648 species there given 

 is the same as given in his " Synopsis plantarum fossilium " (1845), 

 which seems not to have been revised, while Goppert had already 

 enumerated in 1844 (supra, p. 416) 1,778 species. From these figures we 

 now have an advance to 2,055, or more than four times as many as were 

 known to Brongniart in 1828, though only about one-fourth the num- 

 ber now known. 



The great work of 1849 was Brongniart's " Tableau des genres de v6g6- 

 taux fossiles." ^" The author's views relating to the classification and 



^^Eeinhold Berger. De fructibus et seminibus exformationelithanthraoum. Dis- 

 seitatio inaugnralis quam couseDsu et auctoritate amplissimi philosophorum ordinis 

 in alma litterarum universitate viadrina ad summas in ploilosophia honores rite capes- 

 sendos die XVIII, M. Decembris, A. MDCCCXLVIII. H. L. Q. S. pnblice defendet 

 Auctor. VratislavisB, 1848. 



32? Memoirs of the Literary and Philosophical Society of Manchester, Vol. VIII, 

 1848, p. 148. 



''^Vol. II, pp. 2—456. 



229yerhandlungen des naturhistorischen vereines der preussishen Rheinlande, V. 

 Jahrg., 1B48, pp. 113, 126. 



^° Preissohrift. Abhandlung, eingesandt als Antwort auf die Preisfrage: * * * 

 ob die Steinkohlenlager aus Pflanzen entstanden sind, etc. Eine mit dem doppelten 

 Preise gekronte Sohrifl? Haarlem, 1848, 4°, 300 S, 23 Taf., forming the 4'= Deel, 

 Tweede versameling, Verhandl. HoU. Maatsohappen. 



^■51 Victor Eaulin. Sur lea transformations de la flore de I'Europe centrale pendant 

 la p^riode tertiaire. Ann ales des sciences naturelles de Paris, 3= s6rie, Botanique, 

 Tome X, 1848, p. 193. 



232 Annals and Magazine of Natural History, ser. II, Vol I, 1848, p. 376; Proc. Linn. 

 Soc. 1, 1849, p. 344 ; Trans. Linn. Soc, Vol. XX, Pt. I, 1851, p. 469, PI. XXIII, XXIV, 

 Cf. Comtes rendus des stances de I'Academie des sciences, Tome 67, 1868, pp. 421-426. 



233 J. Sauveur. V6g6taux fossiles des terraint' honillers de la Belgique, Acad^mie 

 royale des sciences, des lettres, et des beaux-arts de Belgique, Tome XXII, 1848. 



2** Tableau des genres de v6g6taux fossiles consider^ sous le point de vue de leur 

 classification botanique et de leur distribution g^ologique. Paris, 1849, 8°. Diction- 

 naire uniyersel d'histoire naturelle. 



