386 Geological Society : — 



Calamodendron, so that possibly both may be included in one family ; 

 but much further information on this subject is required. The 

 tissues of the higher Calamodendra are similar to those of Gymno- 

 spermous plants. The wood or vascular matter of the thin- walled 

 Calamites consists of multiporous cells or vessels, in such species as 

 have been examined. 



In conclusion, a Table was exhibited showing the affinities of Si- 

 gillarice, on the one hand, through Clathraria and Syringodendron 

 with Lycopodiaceae, and, on the other hand, through Calamodendron 

 with Equisetaceae ; while in another direction they presented links 

 of connexion with Cycads and Conifers. 



4. " Notes on the Geology of Arisaig, Nova Scotia." By the 

 Rev. D. Honeyman, D.C.L., F.G.S. 



The author referred to a previous paper on the Upper Silurian 

 rocks of Nova Scotia, which he stated appeared to him now to be 

 generally repetitions of his Arisaig series. He noticed the occur- 

 rence of fossils in one of the beds previously supposed to be almost 

 destitute of organic remains, and described the occurrence, in Arisaig 

 township, of a band of crystalline rocks which appeared to contain 

 Eozoon and were probably of Lauren tian age. A note from Prof. 

 Rupert Jones, giving an account of the fossils referred to by Dr. 

 Honeyman, was also read. 



May 25th, 1870. — Joseph Prestwich, Esq., F.R.S., President, 

 in the Chair. 



The following communications were read : — 



1. "Contributions to a knowledge of the Newer Tertiaries of 

 Suffolk and their Fauna." By E. Ray Lankester, Esq., B.A. 



(1) The Suffolk Bone-bed and the Norfolk Stone-bed. — The author 

 pointed out that the recognition of the distinction of these two de- 

 posits from the overlying shelly crags was an important step in the 

 determination of the history of these beds. He combated the notion 

 that the Bone-bed and Stone-bed were identical in their contents, 

 and especially dwelt on the differences of the mammalian fauna found 

 in the two. The late Dr. Falconer's views, hitherto prevalent, con- 

 sisting in regarding the fauna of the Suffolk Bone-bed, Norfolk 

 Stone-bed, and Forest-bed as all of one and the same history and 

 extent, he most strongly opposed. Rhinoceros SchleiermaeJieri, 

 Tapirus priscus, Hipparion, Hyama antiqua, and a well-defined 

 Miocene Mastodon (Fauna 1) had been found in the Bone-bed be- 

 low the Suffolk Crag — the first three in some abundance, but never 

 in the Stone-bed or Forest-bed of Norfolk. They belonged to a 

 different fauna from that indicated by the other mammals common 

 to the Bone-bed and Stone-bed (Fauna 2), viz. Mastodon arvernen- 

 sis, Equus sp., and certain forms of Cervus (studied by Mr. Boyd 

 Dawkins). On the other hand, the Elephas meridionalis (Fauna 3), 

 occurring in the Norfolk Stone-bed and in the Forest-bed, had never 



