84 Citicinfiati Society of Natural History. 



In 1835, Taylor published a second article,'^- in which he 

 described in detail the beds in which the fucoids occur. That 

 near Lewistown is especially noticed. The thickness of the 

 beds is estimated at 200 feet. He infers the existence of 

 numerous surfaces upon which vegetation grew, and believed 

 the rocks were formed in quiet water. No animal remains 

 had been discovered in them. A figure is given of F. brong- 

 niartii, together with that of an unnamed species. In 1836, 

 Harlan publishedt a long article, during the course of which 

 he referred to the two species of Fucoidcs described by him, 

 and pointed out the differences between them and Mantell's 

 species. He also noticed some remarks make by Hitchcock. t 

 in which a very different form was compared to /•'. bro)iffniartii. 

 In 1837, Conrad, II in discussing the "Organic remains of the 

 Red Sandstone," refers to the presence of various fucoids, 

 and on page i6<S records the presence of Fucoidcs brongniarlii 

 Harlan, and on page 171 F. alleghanicnsis. Both occur in the 

 red sandstone of Niagara Falls. In 1838, Conrad, in speaking 

 of the fucoids of the 3d Group of New^ York, says:S "The 

 organic remains consist chiefly of Fiicoides harlani nobis (/-". 

 brongniartii Harlan)." The mention here of Fucoidcs harlani 

 is the first instance of the use of that specific name. The 

 reason for the adoption of this new name does not appear. 

 It has ever since been known in literature as harlani. 



In the following year (1839) the same writer," in discussing 

 the fucoids of New York, said, that while some naturalists 

 had paid very little regard to them, particular species were 

 "more absolutely limited to the respective rocks in which 

 they originated " than were the testacea. He referred then 

 to Fucoidcs harlani, as being "extremely abundant in the red 



'■■On the geological position of certain beds which contain nnmerous fossil 

 marine plants of the I-'ainily Fucoides, discovered near Lewistown, Mifflin County, 

 Pennsylvania. Trans. Geol. Soc. Penn. vol. i, 1835, pp-S-iS- 



tCritical notices of various organic remains hitherto discovered in North 

 America. Trans, (ieol. Soc. Penn., vol. i, 1S35, pp. 46-112. 



{Report on the Geology, Botany and Zoology of Massachusetts. Amherst, 

 Mass.. 1833, p. 233. 



Ilist Annual Report of the Geological survey of the ^d District of New York. 

 1st Ann. Kept. Geol. Sur. N. V., 1837, p. 167. 



^Report of T. A. Conrad on the Palaiontological Department of the Survey. 

 2d Ann. Kept. Geol. Sur. N. V , 1S3H, p. 113. 



liConrad, T. A. Second Annual Report of the Pakeontological Department of 

 the Survey. 3d Ann. Rept. Geol. Sur. N. V., iH39, pp. 60-61. 



