Geological Society. 



573 



Fig. 139. Pollen granule of Epilobium angustifoliiun. 



140, 141. Pollen granule of Godetia rubieunda ; 141. exhibits the ex- 

 tine separated from the other membranes. 



142. Pollen granule of Fuchsia coccinea. 



143. of Fuchsia Devonia. 



144. of Fuchsia fulgens. 



145. of Fuchsia thymifolia. 



146. 147, 148. Pollen granule of Heracleum Spondilium ; 146, its dry 

 or primary form ; 147, its moist or secondary condition ; and 148, end 

 views of it in the same state. 



149. Pollen granule of Didiscus cseruleus. 



150. of Magnolia grandiflora. 



151. 152. Pollen granule of Nymphaea alba; 151, in its dry, and 152, 

 in its moist condition. 



153. Pollen granule of Fumaria officinalis. 



154, 155. Pollen granule of Eschscholtzia californica ; in the second 

 figure the pollen tubes are just emerging from the extine. 



156, 157. Pollen granule of Ranunculus acris ; 156. represents a side 

 view of it in its primary form ; 157, an end ditto in the same state ; 

 and 158, in its secondary form, with a pollen tube issuing through 

 each fissure. 



[The above paper was consigned to our care in the autumn of last 

 year, the delay in its appearance having been occasioned by the 

 number of illustrations. — Ed.] 



PROCEEDINGS OF LEARNED SOCIETIES. 



GEOLOGICAL SOCIETY. 



June 30, 1841. — "A description of a portion of the skeleton of 

 the Cetiosaurus, a gigantic extinct Saurian Reptile occurring in the 

 Oolitic formations of different portions of England," by Professor 

 Owen, F.R.S., F.G.S. 



The remains described in this memoir consist of vertebrae and 

 bones of the extremities obtained by Mr. Kingdon from the oolite 

 quarries of Chipping Norton, in Oxfordshire ; of vertebrae and other 

 bones from the oolite of Blisworth, near Northampton, transmitted 

 to the author by Miss Baker ; and of other remains from the oolite 

 of Staple Hill, Wotton, three miles north-west of Woodstock ; from 

 the oolite near Buckingham ; the Portland stone at Garsington and 

 Thame, in the collection of Dr. Buckland : Mr. Owen has likewise 

 examined a vertebra and some bones of the extremities of the same 

 saurian from the Yorkshire oolite, and preserved in the Scarborough 

 Museum. 



Caudal Vertebra. — A caudal vertebra from near Buckingham, 

 which presented the anchylosed neural arch entire, but with the 

 transverse, oblique and spinous processes broken off, equalled in di- 

 mensions a middle caudal vertebra of a full- sized whale, the antero- 

 posterior diameter being five inches, the transverse eight inches six 

 lines, and the vertical seven inches. The sides and under part of 

 the centrum are described as very concave ; and the shape of the 

 articular extremities as nearly circular, with a greater concavity in 

 the anterior one than in the posterior. The posterior hsemapophysial 



