Notes and Comments. 
45 
jaw, and canine tooth — must be assigned to Eoanthropus, 
but he was not convinced that they could all belong to the 
same individual. 
PROF. A. S. UNDERWOOD. 
Professor A. S. Underwood said that he would confine his 
remarks to the two molars and the sockets of the third molar 
in the Piltdown mandible. He had been prepared to show 
the radiograph at the Royal College of Surgeons in the summer, 
but Professor Keith had been unable to place a lantern at his 
disposal. The two molars were worn down by use to such an 
extent that it was impossible that the individual could have 
been less than 30 years of age, probably a good deal more. 
The sockets of the third molar were not those of an erupting 
tooth, the roots had been quite completed, and the tooth was 
in its final position at death. This was very plainly shown 
in the radiogram. Had the third molar been erupting or 
about to erupt, the roots could not have been on a plane with 
those of the other molars. 
OUR COMMON SEA-BIRDS.* 
With the above title, Dr. P. R. Lowe has published a 
veritable picture gallery of various aspects of the life of our 
sea-birds, and the Proprietors of Country Life have produced 
the photographs in the excellent way for which they have so 
long had a reputation. Dr. Lowe, whose excellent work, 
‘ A Naturalist on Desert Islands,’ is already familiar to our 
readers, now deals exhaustively with the cormorants, terns, 
gulls, skuas, petrels, and auks. The title of the first chapter 
alone shows that the letter-press is not mere padding for the 
photographs : — ‘ Gulls and other Sea-birds in relation to 
their restriction to the Great Land-masses of the Globe.’ The 
author has also secured the services of Messrs. Pycraft. 
Ogilvie-Grant, Beetham, Heatherley, King, Pike, and Roberts. 
While it is perhaps invidious to particularize, we think the 
descriptions of the terns are exceptionally good. For a 
specimen illustration see plate III. 
NORTHUMBERLAND', f 
With its glorious coastline and adjoining islands, its 
variety of geological structure and its wealth of abbeys, mon- 
asteries and quaint churches, an account of the geography of 
Northumberland makes as pleasing a volume as any in the 
remarkable series of County Geographies issued by the Cam- 
bridge University Press, under the editorship of Dr. Guille- 
mard. ‘ Northumberland ’ is by Mr. S. Rennie Haselhurst, 
* 20 Tavistock Square, Covent Garden, W.C. 310 pp., 4to, 15s. net. 
| Northumberland, by S. Rennie Hazelhurst. Cambridge : 1913, 
pp. 179, price 
1914 Feb. 1. 
