Mr. H.H. Corbett, M.R.C.S., read a paper on “Ammonites.”

He explained that Ammonites were the fossil remains of animals which were distantly related to cuttlefish and more nearly to the nautilus.

In order to show interest of ammonites to the geologist and paleontologist, he explained briefly the classification of the stratified rocks composing the coast of the globe, and afterwards proceeded to show that the Cephalopoda (the group of animals to which ammonites belong) were a vert old family, being found as low as the Silurian formation. He mentioned the use of ammonites to the practical geologist in defining life-zones in the rocks, many species having a very short range of geological time, and their presence existing in any locality, thereby serving to define exactly the stratum in which such species are found.

Much more was touched upon. And the essay concluded with a request to the members of the society to help, by collecting and carefully labeling fossils, in the gradual formation of a geological museum for Doncaster.