550 
SILUEIA. 
U. — The Occurrence of Eozoon Canadense in Limestone of the Laurentian 
System in Finland (pp. 13 &c). 
In the Bulletin de l'Acad. Imper. des Sciences de St. Petersbourg, vol. x. No. 1, 
p. 151, Prof. Pusyrewski describes the occurrence of Eozoon Canadense in the 
limestone of Hopunwara in Finland. He describes the rocks in the Government 
of Wiborg and vicinity as consisting of : — a great lower series of orthoclase- 
gneiss and hornblende-rock ; and an upper series of gneiss and schists, divisible 
into two groups, in the lower beds of each of which are bands of marble. The 
limestone (at Hopunwara) of the lower of these two subdivisions contains ser- 
pentinous bands, granules, and filaments, which Prof. Pusyrewski recognizes as 
being Eozoonal in structure, and exactly similar to those described by Logan, 
Dawson, and Carpenter, proving that these rocks of Finland correspond in the 
main to the Laurentian system of Canada. 
V. — Lingulella in the Upper Cambrian Rocks of St. David's (pp. 24 &c). 
At the Meeting of the Geological Society on June 19th, 1867, Mr. J. W. Salter 
read an account of the discovery of a minute Lingulella in the red Cambrian 
rock of St. David's, which there underlies the ' Primordial Silurian ' (mihi). Ac- 
cording to my view (and I am entitled to judge by acquaintance with both 
districts) the rock in which this small fossil was found may be paralleled in age 
with the uppermost or red portion of my original 1 Cambrian ' of the Longmynd 
(1835). This unique Lingulella is pronounced by Mr. Salter to be of the same 
species as one commonly found with Paradoxides in the zone which I term { Pri- 
mordial Silurian,' viz. L. ferruginea (Salt.) j but Dr. Hicks distinguishes it as 
var. ovalis. 
