283 



c 



Further observations on the genus Anthophorabia. Trans, of Linn. Soc. 

 vol. xxi. 



Further observations on the Habits of Monodontomerus. With some . 

 account of a new Acarus (Heteropus ventricosus). Trans, of Linn. Soc. 

 vol. xxi. 



On the Ocelli in the genus Anthophorabia. Trans, of Linn. Soc. 

 vol. xxi. 



On the Reciprocal Relation of the Vital and Physical Forces. Ann. 

 and Mag. Nat. Hist. 1850. 



On the Impregnation of the Ovum in the Amphibia. (First Memoir.) 

 Phil. Trans. 1851. 



On the Impregnation of the Ovum in the Amphibia. And on the Direct 

 Agency of the Spermatozoon. (Second Memoir.) Phil. Trans. 1853. 



On the Impregnation of the Ovum in the Amphibia, and on the early 

 stages of Development of the Embryo. (Third Memoir.) Selected and 

 arranged from the Author's MSS. after his death, by G. V. Ellis, Esq. 

 Phil. Trans. 1854. 



These publications, numerous as they are, were all produced 

 within a period of two-and-twenty years. His more important 

 researches were for the most part communicated to the Royal or 

 Linnean Society, and on two different occasions they received the 

 award of the Royal Medal. 



His earliest inquiries were directed to the structure and economy 

 of insects and other articulated animals, and his name first became 

 generally known in science by his admirable memoirs on the Ana- 

 tomy of the Nervous System of the Sphinx Ligustri, and the 

 changes which that system undergoes during the metamorphosis of 

 the insect. Continuing to prosecute these researches in the Crus- 

 taceans and other allied invertebrata, he arrived at the conclusion, 

 that in all the higher Articulata, the central part of the nervous 

 system consists of two pairs of cords, the one gangliated, the 

 other not, which, in accordance with the views of Sir Charles Bell, 

 he conceived to minister respectively to sensation and motion. 



In a subsequent research on the nervous system of the lulus, he 

 observed in the central cords, a set of fibres which connect together 

 adjacent nerves on the same side of the body, and then extend with 

 them to the surface of the animal. These he regarded as associating 

 in function the lateral nerves of the corresponding side, indepen- 

 dently of the brain, in conformity with the views which were at 





