90 Transactions of the Society. 



First Instalriimt. — This was announced in 1823 (Bull., vol. i., p. 60). 

 The notice is compiled from the label on the box (see p. 14), the Paris 

 depot being filled in " an bureau du Bulletin, Eue de I'iVbbaye No. 13, 

 ou Ton pent voir la premiere livraison deja publiee, ainsi qu'au Museum 

 du Jardin du Roi." De Ferussac appends an eulogistic note, and adds, 

 " We know that MM. d'Orbignj, father and son, have applied them- 

 selves with unheard of zeal and patience to the observation of these 

 ' Infiniment Petits.' The enterprise which we announce does much 

 honour to M. d'Orbigny, jun., who executes it alone under the direction 

 of his father. Naturalists will doubtless applaud it, and it deserves to 

 be encouraged in order that it may continue to be extended even 

 beyond the instalments promised." 



Second Instalment.— This was announced in 1S24 ^^Bull. Sci. Nat. 

 et Geol., vol. i., p. 384). De Ferussac in his note regrets that he 

 cannot give further particulars, as these will only be issued with the 

 fourth instalment. He says here, " the three or four actual specimens " 

 are enclosed between two slips of glass. The " glass boxes " (see p. 14) 

 had evidently been abandoned. 



Third and Fourtlb Instalments. — In 1826 (Bull., vol. viii., p. 130) 

 the final "prospectus" of the Models is abstracted, announcing the 

 issue of the third and fourth instalments, with a copy of the " Prodrome 

 general," which had been published in the Ann. Sci. Nat., accompanied 

 by an Atlas of eight plates — reprints of pis. x.-xvii. of the Atlas to 

 vol. vii. of the Ann. Sci. Nat. The six years' work of d'Orbigny on 

 " cette innombrable quantite de petites especes que Ton designait vague- 

 ment sous le nom de Nautiles Microscopiqnes " are reviewed, and the 

 principles of his classification are laid down. De Ferussac's report 

 upon these two instalments was published later (Bull., vol. is., p. 247), 

 when they had been issued for some months, and is merely a general 

 eulogy of the whole work. 



The pamphlet differs from that already cited in pagination, and in 

 some particulars of the title-page which reads (in the advertisement) : — 

 "Tableau Methodique de la Classe des Cephalopodes par M. ])essalines 

 d'Orbigny, Xatnraliste-voyageur du Museum d'Histoire Naturelle, 

 precede d'une Introduction par M. de Ferussac ; presente a L'Academie 

 Eoyale des Sciences dans la seance du 7 Novembre 1825. In 8vo de 

 150 pp. avec un Tableau et un Atlas de 8 planches in 4to lithographiees. 

 Paris, 1826. M. Guerui, Rue des Fosses Saint-Victor, No. 14. Se 

 vend avec la 4me. livraison des Modeles des Cephalopodes Micro- 

 scopiques." Another pamphlet (a copy of which is in the Geological 

 Library at South Kensington) has a title- wrapper, " Tableau Methodique 

 de la Classe des Cephalopodes," inside which a fuller title reads : — 

 " Tal)leau Methodique de la Classe des Cephalopodes ; par M. A. 

 Dessalines d'Orbigny, Membre de la Societe d'Histoire Naturelle de Paris ; 

 et Naturaliste-Voyageur du Museum d'Histoire Naturelle, precede d'une 

 Introduction par M. de Ferussac. (Presente a I'Academie des Sciences 

 dans la seance du 7 Novembre 1825.) (Extrait des Annales des 

 Sciences d'Histoire {sic) Naturelle. Janvier. 1826.)" 



There is no publisher or printer mentioned. There are a few lines 

 of print at the foot of the page, and the next page (iii) is paged 7. 



