148 Reviews and Book Nottces. 
data supplied in the Boulder Reports published by the British 
Association and the Yorkshire Naturalists’ Union. He regards, 
of course, the presence of Christiania rocks in the Holderness 
Drifts, as a fact established beyond dispute, but he appeals for 
more evidence with regard to the Baltic rocks. 
Dr. Milthers’ work, which by the way is written in English, 
will be heartily welcomed by all students of the many interesting 
problems connected with boulder distribution ; and the working 
geologists of the Yorkshire Naturalists’ Union should. be 
specially grateful for the new field that has been opened for 
their investigation—J.W.S. 
FIELD NOTES. 
MAMMALS. 
PoRPOISE AT TADCASTER.—A strange creature was seen 
disporting itself in the Wharfe at Tadcaster on March rth. 
The usual fate of strangers overtook it. The man with the 
gun Hpdou ice on the scene, and shot it. It proved to be a 
Porpoise, 3 feet 84 inches in length, and weighing 463 Ibs. 
It was exhibited for some time at one of the Jocal hotels.— 
R. FORTUNE. 
—:0 i— 
BIRDS. 
Cormorants at Harrogate.—Late on Saturday night, 
February 11th, I had a telephone message to say that there 
were two large birds perched on some chimneys not very far 
from my house. It was a very clear moonlight night, and.,. 
upon going to the place, I was surprised to find two Comnormne . 
which. had ev idently taken up their quarters there for the 
night.—R. FORTUNE. 
tarly Flocks of Pied Wagtails in Yorkshire. —On 
February roth there was a very large flock of Pied Wagtails 
in Manningham Park, Bradford, Mr. M. Malone counting over 
fifty birds at one time. Mr. Oxley Grabham informs me that 
there were flocks near Pickering about the same date, which 
would probably be part of the same northern migratory move- 
ment. This is quite six weeks earlier than we expect to see 
large flocks in the West Riding. What became of these 
early arrivals is difficult to say, as since that time I have 
neither seen nor heard of any flocks, only occasional stray 
birds, as is usual at this time of the year.—H. B. Booru, 
Ben Rhydding, March 21st, Ig1T. 
A Portrait of Prof. W. Boyd Dawkins, F.R.S., was recently presented 
to the Whitworth Hall, of the University of Manchester, by a number of 
friends who wished to show their appreciation of Prof. Dawkin’s long and 
distinguished services to tne University. 
Naturalist, 
