60 PKOCEEDINGS OF SOCIETIES. ["°ou"nL"arn?7a ' 



to give a clue to a distinct connection between tlie breathing appa- 

 ratus in tbe three diflferent stages of development, which makes it in 

 essential structure identical in all of these, differing only in respect 

 of the external organs. The paper was illustrated by a series of 

 beautiful drawings, and by numerous microscojiic preparations, show- 

 ing the successive stages of development from the egg to the imago. 



Owing to the several meetings of the summer session, a great 

 variety of objects have been exhibited in all branches of Natural 

 History. Our space permits us only to notice a few of the principal 

 microscopic ones. These include, among others, the following : — 



Mr. T. Bolton, collection of Rotifera, including Melicerta ringens, 

 Tubicolaria ringens, Limnias ceratojjhylU, Monocerca rattus, Synchceta 

 jjedinata, Euchlanis triquetra, Botifer injiatus, Adinurus neptunius, 

 Philodina macrostyla, Choetonotus larus, and others. 



Mr. W. E. Hughes, Bugula avicularis, B. plumosa, BowerhanJcia 

 imhricata, and other Marine polyzoa, living ; — Pedicillarife of Echinus 

 Splicera. 



Mr. W. Madely, Vorticella nebuUfera, Epistylis grandis, Carchesiura 

 polypinum, Trichodina pediculi, Vaginicola valvata, Euplotes patella, 

 and other Botifera ; — Statoblasts of fresh-water Polyzoa, showing 

 adherence of the valves to the young polyzoon, until germination had 

 been several times repeated (mounted). 



Mr. W. P. Marshall, Caprella linearis, Lucernaria campanulata, 

 Phoxichilidinm coccineum. Larva of ^Ephemerce and slides, illustrative 

 of the development of the common gnat, from the egg to the imago, 

 all mounted in glycerine jelly. 



Mr. C. T. Parsons, ^cidium epilohii, Larva and p)iip(i of Corethra 

 plumicornis, very fine objects for the polariscope and dark-ground 

 illumination. 



Mr. C. Pumphrey, Pedicillarise and Ambulacral discs of EcJiini. 

 Living specimens of several species of Flustra and Alcyonidiiim. 



Mr. J. Shoebotham, the Entomostracon, Diaptomus castor, male and 

 female, showing the spermatic sac, &c. 



Mr. E. Simpson, Hydra virtdis ; Stentor Mulleri and other rotifers. 



Mr. G. S, Tye, Statoblasts of Plumatella repens and Cristatella 

 mucedo, mounted ; Plumatella repens, mounted with tentacles expanded. 



Mr. A. W. Wills, Batracliosperonum confnsum, B. sfagnale; Choito- 

 phora endivioefolia ; Baphidia angulosa, &c. ; Pedicillarias of Uraster 

 rubens and Echinus milearis. Stephanoceros eichornii — Cristatella 

 mucedo and Plumatella repens, living — Marine polyzoa, mounted, 

 including Anguinaria spatulata, Bugula avicidaria, Cellularia reptans, 

 Flustra foliacea, F. membranacea, F. piajiyracea, Membrunipora pilosa, 

 Scruparia chelata, Valperia postulata, Salicornaria farciminoides, and 

 others. 



PiEADiNG Microscopical Society.* 



October 19th, 1869. — Captain Lang, President, in the chair. 

 This being the first meeting of the session, the President made a 

 few remarks upon the desirability of keeping up the interest of the 



* Kepoit furuished by Mr. B. J, Austin. 



