10 SECRETS OF ANIMAL LIFE 
Adélie species at least—than any previous observer. 
The work of Dr. Edward A. Wilson, whose un- 
timely death was such a loss both to science and art, 
remains a model of accuracy and thoroughness, but 
Dr. Levick has gone further. He has previously 
written a delightful popular study of the social 
habits of the Adélie penguins (Heinemann, 1914); 
what we have before us now is an excerpt (1915) 
from the first volume of the British Museum Report 
on the zoological discoveries of the “ Terra 
Nova” Expedition. It is entitled Natural History 
of the Adélie Penguin, and is illustrated with 
twenty-one remarkable photographs. It is a study 
which any naturalist might be proud of, and it 
shows the author to be an observer of the first rank. 
The observations appeal not only to those who are 
keen on birds, but also to those who are interested 
from the philosophical side in the deeper problems 
of natural history. “ You of any well that springs,” 
said Meredith, “ may unfold the heaven of things,” 
and it is extraordinary how “ far ben” into biology 
Dr. Levick’s careful study leads us. 
Towards the middle of October, a single Adeélie 
penguin was seen on the rookery at Cape Adare. 
Two days afterwards there were two, and next day 
about a score, and next day “as we looked across 
the sea-ice to the northwards, we could see a long 
line of Adélies approaching, tailing out in snake- 
like fashion, as far as the horizon.” This is the first 
picture, the return of the penguins to their birth- 
place. Dr. Louis Gain of the Charcot Expedition 
