84 General Notes. (January, 
never stop until his old associate is also transferred to their new 
abode. A still more remarkable illustration is drawn from the 
imbauba, or candle-nut tree of South America, which strikes up 
an alliance with a species of small black ant to their mutual ber 
efit. The whole subject of symbiosis, which naturalists are only 
beginning to study, is calculated to throw great light on the Dat 
winian theory of biological evolution. The various cases © 
fellowship between animals and plants of different orders, att 
even between members of the animal and vegetable kingdoms, 
show how, in the perpetual struggle for existence, the individul 
organism avails itself of the smallest advantage to secure a place 
in the household of nature. It often thus acquires marvelous | 
particular perspicuity than in the art of bringing int jew 
tofa 
