Reports and Proceedings. 557 
other localities in the West of England, and, as Mr. Godwin-Austen 
considered the angular detritus (1) to be the result of subaérial 
weathering, which took place over this area approximately contem- 
poraneously with the deposition of the Boulder-formation in more 
northern districts, this Porlock submerged forest seems to fix a rela- 
tive date for the rest, namely, as being subsequent to the Glacial 
Period. By this means, also, a relative date is arrived at for many 
of the raised beaches in the West of England, as of that near Baggy 
Point, where the old sea-bed, at an elevation of 60 feet, is covered 
by an enormous accumulation of angular debris ; these raised beaches 
may therefore correspond in time to certain marine deposits, which, 
in Norfolk and Suffolk, next underlie the great ‘Boulder forma- 
tion.’ 
2. ‘On the Marine Origin of the “ Parallel Roads” of Glen Roy.’ 
By the Rev. R. Boog Watson, B.A., F.G.S. 
After a brief description of these well-known ‘ Roads,’ the author 
gave an analysis of the two principal theories that have been started 
to account for their formation, namely, the Ice-dam theory and the 
Marine theory. With regard to the first theory, Mr. Boog Watson 
stated his opinion that although it has some strong points, especially 
in respect of the coincidence between the levels of the ‘ Cols’ at 
the glen-heads and those of the ‘ Roads,’ yet on the other hand 
it is weak, inasmuch as the cause assigned is extremely local in its 
action, while the phenomena to be explained are very general and 
have a wide range,—terraces similar to those of Glen Roy occurring 
in Scandinavia and elsewhere. In the author’s opinion, also, the 
ice-dam is impossible, and would be inefficient if possible: it would 
not be water-tight, and there is no place for it in the history of the 
Post-pliocene changes in Scotland. But he remarked that objec- 
tions like these cannot be urged against the Marine theory, as the 
sea has been on the spot, and is able to perform the work required 
of it. At the same time the author admitted that the Marine 
theory is not free from difficulties, the chief being the perfection and 
horizontality of the ‘ Roads,’ and their barrenness in marine organ- 
isms ; and he concluded by suggesting some explanations of these 
apparent anomalies. 
The following specimens were exhibited :—Specimens from Por- 
lock Bay; exhibited by R. A. C. Godwin-Austen, Esq., F.R.S., 
For. Sec. G.S. A miscellaneous collection of recent shells and fossil 
remains; presented by Sir R. I. Murchison, K.C.B., F.R.S., F.G.S. 
New Cornish Minerals ; exhibited by Bernard H. Woodward, Esq. 
Specimens of various Minerals ; exhibited by G. E. Roberts, Esq., 
F.G.S. New Corals from Malta; exhibited by Dr. P. Martin 
Duncan, Sec. G.S. The new edition of the Greenough Geological 
Map was exhibited in the Meeting-room. 
ANNIVERSARY OF THE NORWICH GEOLOGICAL SociETY.—On Tues- 
day evening, the second anniversary of the Norwich Geological So- 
ciety was held at the Maid’s Head Hotel. It had been intended to 
have formed an excursion to Bramerton, for the purpose of studying 
