36 Notices of Memoirs. 
Heiligenberg (1,200 feet, the source of the Oder), and Na-Wartie 
(984 feet). To the north is the Bradlstein (1,884 feet), connecting 
the district with the Moravian mountains, which are structurally the 
‘same. The heights of the plateau within this ring appear, from the 
map accompanying the author’s memoir, to vary from 720 to 850 feet.. 
The valleys with which the plateau is intersected, and in one of which 
Olmiitz is built, are about 650 feet above the sea. 
The author considers that an elliptical boss of granite, a little to 
the south of the town, is the geological cause of the want of success 
in boring for water. ‘The hills around are covered for some distance 
with loess, beneath which Miocene beds, Culm-schists, Devonian 
limestone and sandstones, clay-slate and granite exist, coming out on 
both sides ; but lines of disturbance, connected with the presence of 
the granite, are traceable. Thus the Devonian rocks are thrown off 
to the east at Na-Wartie, and to the west at Kosirzberg, while mid- 
way they dip on the north side to the north, and on the south side to 
the south. A succession of crystalline metamorphic rocks, forming 
zones of quartzite, clay-slate, and mica-slate, conduct to the granitic 
axis. The correctness of this view, which is very imperfectly illustrated 
by surface- geology, is proved by the borings made at various points. 
There is a considerable thickness of marine strata of the Miocene 
period in the neighbourhood of Olmiitz ; the important deposits of 
the Danube Valley, belonging to this part of the Tertiary epoch, 
extending in a narrow tongue a little beyond the town up the valley 
of the March. At more than 850 feet above the sea, lying on 
Devonian limestone, and not unfrequently faulted, there are sandy 
limestones, from one to four feet thick, containing Cerithium rubi- 
ginosum, Tapes gregaria, Panopea Menardi, and Anomia costata. 
IDA a! e\ 
Sutin Prants rosstui DEL TrIAs DE Recoaro, RACCOLTH DAL Pror. A. Massa- 
LONGO OSSERVAZIONI DEL Barone AcHILLE DE Zieno. (Memorie dell I. R. 
Istituto Veneto di Scienze, Lettere, ed Arti, vol. xi. 1862.) 
HIS memoir consists of thirty-one pages of descriptions of species 
of Plants collected by the late Prof. Massalongo from the 
Triassic strata of the Recoaro district, and is illustrated by ten 
plates of figures of the species. The species described, thirteen in 
number, twelve of which are new, are the following :— 
Equisetites Brongniarti (?), Unger. Taxodites Saxolympize, Massal. MS. 
Caulopteris? Maraschiniana,Mass.MS.| Araucarites Recubariensis, Mass, MS. 
C. Leliana, Massal. MS. A. Massalongi, Zigno. 
C. Festariana, Massal. MS. A. pachyphyllus, Zigno. 
/E&thophylum Feetterlianum, Mass. | Haidingera Schaurothiana, Mass. MS. 
MS. Taxites Massalongi, Zegno. 
Echinostachys Massalongi, Zgno. T. Vicetinus, Massal. MS. 
The author arrives at the following conclusions:— 
1. That in the Trias of the Basin of Ricoaro there exist two 
different floras, one characterizing the ‘ Lower Sandstone’ overlying 
the mica-schist, and the other peculiar to the ‘ Upper Sandstone, 
Marl, and Limestone.’ The first is distinguished by the remains of 
