BOTANICAL AND GEOLOGICAL. 723
smaller vessels surrounding vessels of a larger diameter nearly equal to those forming the vertical tissue.
" Eig. 3 a. Is an oblique section, which exhibits the connection of these vascular cords with the vertical tissue. ,, Trans. Geol Soc, 2nd ser. vol. v (1840).
��Petrophiloides.
" Upon showing the fossil cones to Dr. R. Brown, he very kindly pointed out to me the affinity existing between them and the genera PetrophUa and Leucadendron, and particularly with one species of the former genus — Petro- phUa diversifolia — described in his ' Prodromus Florae Novae Hollandise/ page 365."
Dr. Bowerbank's ' History of the Fossil Fruits and Cones of the London Clay' page 43 (1840).
Mr. [now Sir] C. Lyell, in a paper ' On the Boulder Formation and Freshwater Deposits of Eastern Norfolk/ says —
" Among the vegetable fossils the most common and best preserved are the seed-vessels of an aquatic plant which Mr. R. Brown refers to Ceratophyllum demersum, English Botany, 947." — London and Edin. Phil. Mag., vol. 15, p. 355 (1840).
Lieut. Newbould says that Mr. R. Brown determined the specimens of fossil wood brought by him from Egypt " to be dicotyledonous, and not coniferous." — Geol. Proc. iii, p. 787. {Bead Jan. 29, 1842.)
Dr. Mantell, in a paper c On Emits from the Cre- taceous Rocks/ says, under Carpolifhes Smithia —
"I am indebted to Dr. Robert Brown for the careful examination of this fossil, and he informed me that he knew of no fruit to which it bore any near affinity, but
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