20 Transactions of the Society. 



of species," and he reserves further cominent " for the general 

 work." 1 



What, then, is the explanation of this preliminary publication ? 

 We may gather it from d'Orbigny's later works, and from the 

 " Rapport " upon the " Tableau Methodique " made by Latreille,^ 

 in which, thougli it was made after the presentation of the 

 " Prodrome," the work of d'Orbigny is described as " unpublished." 

 D'Orbigny tells us, in his Introduction to de Ferussac's mainly 

 poaihumous work on the " Cephalopodes Acetabuliferes," ^ that 

 Pleuriau de Bellevue took the drawings he had made of Mollusca, 

 Eadiata, and Cephalopoda (i.e. Foraminifera) to Paris with him in 

 1822, and showed them to Cuvier, Brongiiiart, de F^russac, and 

 other scientists, and this would appear to have constituted his 

 first introduction to de Ferussac* We have seen that d'Orbigny 

 was in correspondence with him in 1823. (See Appendix C, 

 p. 90.) Now, de Ferussac had published in 1822 a work in which 

 he had dealt with the hitherto noted species of Foraminifera among 

 the Cephalopod Mollusca,^ and further confusion had been intro- 

 duced in the same year by Lamarck in the seventh volume of his 

 " Animaux sans Vertebres." " De Ferussac tells us, in his Intro- 

 duction to the " Tableau," that as he knew in 1822 that d'Orbigny 



1 I., p. 295 (note). lu the last writings of d'Orbigny on the Foraminifera he 

 still referred to the Tableau as " le prodrome d'un ouvrage g6u6ral sur ces etres " 

 (XIII., p. 663). 



2 "Rapport fait a I'Acad^mie des Sciences de Paris (Stance du 7e Decembre, 

 1825), au nom d'une commission compos^e de MM. Geoff roy-St. Hilaire et 

 Latreille sur un ouvrage inedite de M. A. Dessalines d'Orbigny, ayaut pour titre 

 Tableau M6thodique de la Classe des Cephalopodes. M. Latreille, Rapporteur." 

 Paris, Imprim^rie de Mme. Veuve Agasse, Rue des Poitevins, No. 6. 1825, 

 i and 27 pp. (reprint). 



* See note 1 on p. 42. 



* He repeats in this place that he was only enabled to publish a " Prodrome," 

 but that he has now published in Ramon de la Sagra's work on Cuba *' a complete 

 work in which I have established my general views." He also refers to the Cauar}" 

 Islands, South American, and Paris Chalk papers, which dates this Introduction as 

 being written soon after 1840. 



^ " Tableaux systematiques des Animaux moUusques, classes en Families 

 naturelles dans lesquels on a etabli la concordance de tous les systemes suivi d'un 

 Prodrome G6n6ral pour tous les MoUusques terrestres et fluviatiles vivants o\\ 

 fossiles" (Paris and London, n.d. 1822) {nide Sherborn). My copy bears a con- 

 temporary MS. date 1821, which is probably correct. In this work, which is of 

 importance to us as being in one sense responsible for the publication of the 

 "Tableau Methodique" in 1826, the Foraminifera are tabulated (p. xviii) as 

 follows : — 



Orthoceres (Nodosaire). 



Lituites (Canope, Lituole, Spiroline, Spirule). 



Discorbes (Cristellaire, Discorbe, Rotalie). 



Nautiles (Lenticuline, Nautile). 



Camerines (Siderolite, Nvunmule, Orbiculine, M^lonie). 



Milioles (Rimuline, Miliole, Globulite, Anthuse). 

 These are all included in the first Order (Decapodes) of Class I. (Cephalopodes). 

 '* J. P. B. A. de M. de Lamarck, "Histoire naturelle des Animaux sans 

 Vertebres," ii. (Paris, 1816), pp. 193-197; vii. (Paris, 1822), pp. 580-632. 2nd ed., 

 Paris, 1835-45, 11 vol. 



