Geological Society, 573 Fig. 1459. Pollen granule of Epilobium angustifoKuHi. 140, 141. Pollen granule of Godetia rubicunda ; 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 Heracleura 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 caeruleus. 150. of Magnolia grandiflora. 151. 152. Pollen granule of Nymphaea alba; 151, in its drj^, 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. Tlie 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
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