Viii PBOCEEDINGS OF THE GEOLOGICAL SOCIETY. [May I903. 



seed represent longitudinal and transverse sections through the 

 pollen-chamber and also through the prothallus. 



(2) The fossil seed Lagenostoma, from the Coal-Measures of 

 Lancashire, is modelled in a similar manner, and shows a very 

 interesting structure, especially in the region of the pollen-chamber. 



(3) A model of Pachytesta, a large fossil seed of Cycadean type, 

 was exhibited, and also models of the seeds of the recent Gymno- 

 sperms, Zamia and Torreya nucifera, showing some strong points 

 of resemblance. 



The models of the fossil seeds show all the additional features 

 recently observed by Prof. F. W. Oliver in his researches on these 

 fossils, to whom Mr. Smedley expressed his indebtedness for the 

 help and suggestions that had made it possible for him to prepare 

 the models exhibited. 



The following communications were read : — 



1. ' The Granite and Greisen of Cligga Head (Western Cornwall). 

 By John Brooke Scrivenor, Esq., M.A., F.G.S. 1 



2. ' Notes on the Geology of Patagonia.' By John Brooke 

 Scrivenor, Esq., M.A., F.G.S. 



3. ' On a Fossiliferous Band at the Top of the Lower Green- 

 sand near Leighton Buzzard (Bedfordshire).' By George William 

 Lamplugh, Esq., F.G.S., and John Francis Walker, Esq., M.A., 

 F.L.S., F.G.S. 



In addition to the specimens described above, the following were 

 exhibited : — 



Rock -Specimens, Microscope -Sections, and Lantern - Slides of 

 Granite and Greisen from Cligga Head, exhibited by J. B. 

 Scrivenor, Esq., M.A., F.G.S., in illustration of his paper on that 

 district. 



Microscope-Sections of Santa Cruz Rocks and Lantern-Slides, 

 exhibited by J. B. Scrivenor, Esq., M.A., F.G.S., in illustration of 

 his paper on the Geology of Patagonia. 



Fossils from the Band at the Top of the Lower Greensand, near 

 Leighton Buzzard, exhibited by G. W. Lamplugh, Esq., F.G.S., and 

 J. F. Walker, Esq., M.A., F.L.S., F.G.S., in illustration of their 

 paper. 



Colour-printed copies of n.s. 1-inch Geological Survey Maps, 

 jNos. 232, 248, & 249, presented by the Director of H.M. Geological 

 Survey. 



Eighteen Platinotype Photographs (cabinet size) of Fellows of 

 the Society, presented by Messrs. Maull & Fox. 



1 Communicated by permission of the Director of H.M. Geological Survey. 



