I will give a few of the passages which Lamarck would find in this translation. Speaking of Dr. Darwin, M. Deleuze says:--"Il falloit encore qu'un nouvel observateur, entrant dans la route qui venoit de s'ouvrir, s'y frayat des sentiers ignores; que liant la physique vegetale a la botanique il nous montrat dans les plantes, non seulement des corps organises soumis a des lois constantes, mais des etres doues sinon de sensibilite, au moins d'une irritabilite particuliere, d'un principe de vie _qui leur fait executer des mouvements analogues a leurs besoins_....[202] "Il est des animaux et des plantes qui par le laps du tems paroissent avoir eprouve des changemens dans leur organisation, _pour s'accommoder a de nouveaux genres de nourriture et aux moyens de se la procurer_. Peut-etre les productions de la nature font elles des progres vers la perfection. Cette idee appuyee par les observations modernes sur l'accroissement progressif des parties solides du globe, s'accorde avec la dignite et la providence du createur de l'univers."[203] "La nature semble s'etre fait un jeu d'etablir entre tous les etres organises une sorte de guerre qui entretient leur activite: si elle a donne aux uns des moyens de defense, elle a donne aux autres des moyens d'attaque."[204] Turning to the 'Botanic Garden' itself, I find that this admirable sentence belongs to M. Deleuze, and not to Dr. Darwin, who, however, has said what comes to much the same thing,[205] as may be seen p. 227 of this volume. But the authorship is immaterial; whether the passage was by Dr. Darwin or M. Deleuze, it was, in all probability, known to Lamarck before his change of front. * * * * * The note on Trapa Natans again[206] suggests itself as the source from which the passage in the 'Philosophie Zoologique' about the Ranunculus aquatilis is taken,[207] while one of the most important passages in the work, a summary, in fact, of the principal means of modification, seems to be taken, the first half of it from Buffon, and the second from Dr. Darwin. I have called attention to it on pp. 300, 301. We may then suppose that Lamarck failed to understand Buffon, and conceived that he ought either to have gone much farther, or not so far; not being yet prepared to go the whole length himself, he opposed mutability till Dr. Darwin's additions to Buffon's ostensible theory reached him, whereon he at once adopted them, and having received nothing but a few notes and hints, felt himself at liberty to work the theory out independently and claim it. In so original a work as the '_Philosophie Zoologique_' must always be considered, this may be legitimate, but I find in it, as Isidore Geoffroy seems also to have found, a little more claim to complete independence than is acceptable to one who is fresh from Buffon and Dr. Darwin. FOOTNOTES: [186] 'Hist. Nat. Gen.,' tom. ii. p. 404, 1859.