140 TRANSACTIONS OF THE [JUNE 6, 
but I think it must have been New York, as I do not remember 
specimens of that kind from Ohio.’’] Finally, from the Catskill, at 
Jefferson, Schoharie County, N. Y., while in an ‘additional note, 
October 23, 1862,”’ opposite p. 329, the age of the Jefferson horizon 
is changed to Chemung. [This locality is now considered as of 
Hamilton age, Am. Geol., vol. vii, p. 356, foot-note.] Rhizomes 
are reported from Fullenham, Schoharie County [probably Fulton- 
ham, which is Hamilton], and at Cazenovia [Madison County, and 
also of Hamilton age ]. 
Dawson, Quart. Jour. Geol. Soc., vol. xix, 1863, pp. 461, 462, 
states that. he has very imperfect specimens from Perry, Maine, 
which he somewhat doubtfully identifies as belonging to the three 
species P. princeps, P. elegans, and P. glabrum: on p. 465, see pl. 
xvili, Figs. 22a—22¢, is a description of the rhizomata of P. 
princeps, Which are stated to be from ‘‘the marine limestones at the 
base of the Gaspé sandstones, constituting the lowest members of 
the Devonian series, if they are not Upper Silurian.”’ 
Hall, 16th Regent’s Rept. on State Cab. Nat. Hist., 1863, p. 
111, fig. 2, reproduces Vanuxem’s figure of a fossil plant [ Geol. 
N. Y., Pt. ILI, p. 161, fig. 40], and calls it P. princeps Dn. on p. 
110. 
Dawson, Geol. Surv. Canada, Foss. Plants Dev. and Up. Sil., 
1871, pp. 38, 39, describes the variety ornatum of P. princeps 
from Gaspé, and gives good figures of it on pl. ix, figs. 97-110; 
while on pl. x, figs. 111, 118-120, and pl. xi, figs. 127-129, 133, 
'134, are additional figures illustrating the structure of P. princeps. 
On p. 76 it is stated that from the Middle Devonian of Scotland are 
“fragments referrible to Psilophyton princeps,” and on p. 77 a 
specimen, ‘‘apparently P. princeps,” is mentioned from the Devo- 
nian of Northern Scotland. 
Peach, Trans. Edinb. Geol. Soc., vol. iii, Pt. II, 1879, pp. 150, 
151, identifies this species from the Old Red Sandstone of the island 
of Stroma, Pentland Firth, and from se¥eral localites in Caithness, 
northern Scotland. 
Zeiller, Bull. Soc. Géol. de France, 3d ser., vol. viii, 1880, p. 
504, mentions a specimen from the Devonian of Caffiers, France, 
which he compares with one of Dawson’s figures of P. princeps, 
although he is inclined to consider it nearer Lepidodendron gas- 
pianum Dn. 
Dawson, Foss. Plants Erian (Dev.) and Up. Sil., Pt. II, 1882, 
p. 103, reports this species from the Lower Devonian of Campbell- 
ton, northern New Brunswick, as well as on the opposite side of 
the Restigouche River in the Province of Quebec. 
J. C. White, 2d Geol. Surv. Penna., G’, 1883, p. 307, mentions 
“vegetable fragments which resemble Psilophyton princeps Dn.” 
from what is called upper Chemung, two miles above Danville, 
Montour County, Penna. 
Kidston, Cat. Paleozoic Plants British Mus., 1886, p. 233, calls 
the plant figured by Vanuxem in 1842 the ‘‘earliest figure of 
