94 On the development of the Sporce of Anthoceros Icevis. 



thoceros punctatus (a plant on which however I have only 

 made a small number of observations) ; but it manifests itself 

 in a positive manner in the Jungermannia epiphylla, while 

 I have not seen it in the Riccia glauca. It seems to me 

 consequently that we should not value too highly the ques- 

 tion, viz. whether the four divisions of the mother-cellule 

 remain reunited or not, and that, notwithstanding, we can- 

 not consider the solution of this question, as furnishing 

 a characteristic distinction between the mother-cellules of 

 the sporae and those of the pollenic grains. 



I should intimate, that the figures of the plate were drawn 

 from an augmentation of 380. 



Translated from the Annales des Sciences Naturelles, for the Calcutta Journal 

 of Natural History. — Jos. M. 



Report made to the Academy of Science, in the sitting of the 

 9th March 1840, by M. de Blainville, on a memoir of 

 M. Dufo, entitled, Observations on Marine, Terrestrial, 

 and Flaviatile Molluscs from the Sechelles and Amirantes 

 Islands.* 



Zoology is not only composed of a knowledge of the 

 external and internal organization of creatures, of their specific 

 distinctions, of their position in the natural series which 

 they form, departments which are as it were reserved for pro- 

 fessional Zoologists, to have arrived this length previous 

 studies would have been necessary, collections at our dis- 

 position, books of description and plates; but it demands 

 equally an acquaintance with the manners and habits of ani- 

 mals, which although evident deductions often of the peculia- 

 rities of organization, are not so however always without 

 exception. So that the study of living creatures, their re- 

 lations with the earth, with the medium in which they 

 live, with the other organized bodies by which they nourish 



* Translated from the An. Sc. Nat. for the Calcutta Jour. Nat. Hist, 

 by Joseph M'Clelland, M. D. 



