46 Reports and Proceedings— 
representatives of the Society, are requested to communicate with 
the Assistant Secretary, Burlington House, W. 
The following communications were read :— 
1. “Note on the Nufenen-stock (Lepontine Alps).” By Prof. T. 
G. Bonney, D.Se., LL.D., F.R.S., V.P.G.S. 
In 1889 the author was obliged to leave some work incomplete in 
this rather out-of-the-way portion of the Lepontine Alps. In the 
summer of 1891 he returned thither in company with Mr. J. Eccles, 
F.G.S., and the present note is supplementary to the former paper. 
The Nufenen-stock was traversed from north to south, anda return 
section made roughly along the eastern bank of the Gries Glacier. 
Gneiss abounds on the north side of the Nufenen Pass, followed by 
rauchwacké and some Jurassic rock. On the flank of the mountain 
are small outcrops of rauchwacké and of the so-called ‘“ Disthene- 
schists” (both badly exposed), followed by much Dark-mica schist, 
often containing black garnets. Higher up is a considerable mass 
of Jurassic rock with the “knots” and “prisms” which have been 
mistaken for garnets and staurolites, but Dark-mica schists set in 
again before the summit is reached. They continue down the 
southern flank of the peak ; but rather north of the lowest part of the 
water-shed, between Switzerland and Italy, the “ Disthene-schist ” 
is again found, followed by a fair-sized mass of rauchwacké. 
The return section gave a similar association in reverse order ; and 
both confirmed the conclusions expressed by the author in 1890 as 
to the absence of garnets and staurolites from Jurassic rocks (with 
belemnites, etc.), and the great break between these or the under- 
lying rauchwacké (where it occurs) and the crystalline schists, in 
which garnets often abound, of the Lepontine Alps. The ecrystal- 
line schists and the Mesozoic rocks are thrown into a series of very 
sharp folds, which, locally, presents at first sight the appearance of 
interstratification. 
2. “‘On some Schistose ‘Greenstones’ and allied Hornblendie 
Schists from the Pennine Alps, as illustrative of the Effects of 
Pressure-Metamorphism.” By Prof. 'T. G. Bonney, D.Sc., LL.D., 
F.B.S., V.P.G.S. 
The author describes the results of study in the field and with 
the microscope of (a) some thin dykes in the cale-schist group, much 
modified by pressure; (b) some larger masses of green schist which 
appear to be closely associated with the dykes; (c) some other 
pressure-modified greenstone dykes of greater thickness than the 
first. The specimens were obtained, for the most part, either near 
Saas Fee or in the Binnenthal. 
These results, in his opinion, justified the following conclusions : 
_ (1) That basic intrusive rocks, presumably once dolerites or 
basalts, can be converted into foliated, possibly even slightly banded, 
schists, in which no recognizable trace of the original structure 
remains. 
(2) That in an early (possibly the first) stage of the process the 
primary constituents of the rock-mass are crushed or sheared, and 
thus their fragments frequently assume a somewhat “‘streaky ” order; 
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