Mr. Corbett then read a paper on ”The Snail, its Natural History & Allies”.
The Essayist briefly mentioned the three great divisions of the Mollusca, viz. Cephalopoda, Gasteropoda and Lamellibranchiata.
He then described the anatomy, Physiology & development of a gasteropod & afterwards pointed out the changes undergone by freshwater & land species in departing from the marine type.

In alluding to the formation of the shell, he drew attention to the sinistral & monstrosities of dextral species & showed how they led to the eventual production of sinistral species.

The great variety of colour bands in Helix& were illustrated by numerous examples, some of them of considerable beauty.

Mr. Corbett stated how a process of evolution the gradual obsolescence of shell in different species produced in its full development then shell-less slug.

The meeting closed with the exhibition, under the microscope, of examples of some of the species described.