20 



member of tile Tipper Calcareous Grit, which, is thus described 

 as it occurs at Sturminster Newton Eailway section in a vahiable 

 paper just brought out by these accomplished geologists: — 



" No. 36 — Rough Limestone, shelly, and hardened totvards the 

 upper part, and having a thin bed of blue clay below. This contains 

 a few oolitic grains of all sizes up to that of a pea. Trigonia 

 Clavellata, &c. (very many specimens of shells). The authors 

 just quoted say that '■'■A most fossiliferous quarry may be seen at 



Glanvilles Wootton, composed of hard blue finely oolitic ragstone, con- 

 taining shell layers, and gradually into fine shell limestone. The fossils 

 here are Trigonia clavellata (abundant), Astarte pohjmorpha,^'' Sfc. 



(about a dozen specimens, xvith bivalves J. This we may have the 

 pleasure of seeing, &c. 



So abundant indeed is the Trigona Clavellata that two slabs 



worked out by that clever Fosil demonstrator, Mr. Bishop 



Eeynolds, have as many as 40 valves each displayed out with 



the minutest care. 



This subject is of interest to us, as it fixes a species, the name 



of which, until Dr. Lycett's Monograph was published, had been 



given to at least a dozen forms. 



The great interest, however, consists in the fact of the large 



masses of individuals which are met with in different places. 

 This added to the perfect state of preservation presented by 



these fossils make this species one of your most interesting of 



oolitic fossils. 



Our county is rich in Trigonias, and as a prize is offered to the 



King's School for a paper on the different forms which occur in 



the inferior oolite of Dorset, we shall hope for as successful a 



working out of species as has abeady been done in the case of 



the genus Astarte — a paper on which wiU be found in the 



present volume. 



