184 The American Geologist. Feb.isoo 
who do not want very compi-ehensive information on the subject, 
otherwise there is no substitute for Zittel, nor do the authors make 
any such claim. 
Devonian Plants from Ohio. By Dr. J. S. Newberry. (From the 
Journal of the Cincinnati Society of Natural History, Vol. xii, 1889, 
pp. 48-56, plates 4-6.) 
This paper gives some additional information about the paleobotany 
of the Corniferous limestone of Ohio, a formation which has contribut- 
ed but little to this science. Five species are figured and described, 
four of which are from the Delaware limestone or upper division of the 
Corniferous. The remaining species, Dadoxylon neivberryi Dn., occur 
in the Huron shale, and according to Prof. Orton (Rep't Geol. Surv. 
Ohio, vol. vi, p. 30) is found free in the shale and, also, at the centre 
of concretions. It is interesting to note that in New York state the 
Genesee shale, which is at about the same geological horizon as the 
lower Huron shale, contains so-called Coniferous wood, which Sir Wil- 
liam Dawson has named Dadoxylon clarkii. This species of Dadoxy- 
lon is not rare in a concretionary layer of the Genesee shale on 
Canandaigua lake and at other localities in Ontario county. New York. 
One of the four Corniferous species, Sphenophyllum vetustum, is new 
and, except S. primsevum Lx. from the Hudson river group of Kentuc- 
ky and Ohio, it is the most ancient species of this genus yet found in 
America. The early occurence in the Corniferous limestone of Lepido- 
dendron gaspianum Dn., or a closely allied species, which was reported 
provisionally in 1873 (Eep't Geol. Surv. Ohio, vol i, part i Geology, 
p. 147), is confirmed. The tree ferns Caulopteris antiqua Newb. and C. 
peregrina Newb. were first figured and described by Sir William Daw- 
son in the Quart. Jour. Geol. Soc, vol. xxvii, 1871, pp. 271-272. On 
p. 269 it is stated that Dr. Newberry had named the specimens but 
allowed Dawson to compare them with the other species described in 
the paper. In the Ohio geological report for 1873 {loc. cit. p. 146), Dr. 
Newberry mentions these species but without figures or description 
and it appears that his description has been delayed until the present 
paper, which is eighteen years later than Dawson's. 
Dr. Newberry's statement that "the fossil plants from New York 
described by Dawson, Hall and Vanuxem are from the Chemung or 
Catskill" is somewhat erronous. It is true that in part they are from 
these formations, but the Hamilton period has furnished a considerable 
number of species. The number of species known from the New York 
Devonian is approximately as follows : The Corniferous limestone has 
Protosalvinia huronensis Dn. and the doubtful form called Spirophyton 
candagalli (Van.) Hall; the Macellus shale, six; Hamilton, nineteen; 
Genesee, nine; Portage, six; Chemung, twenty-four; and. the Catskill, 
five. 
The material of this paper was prepared originally for a part of vol. 
Ill, of the Palaeontology of Ohio, but unfortunately was not published 
by the State. There are drawings and descriptions of new species of 
