184 
Notes. 
In the same journal Miss S, P. Monks gives a valuable bio- 
graphy of the American green lizard (. Anolis principalis ), and 
Mr. G. K. Morris an account of a new leaf-cutting ant, an Atta, 
which inhabits the coast of New Jersey. The editors, Messrs. 
A. S. Packard, jun., and E. D. Cope, denounce, with well-merited 
indignation, the import-duty of 10 per cent levied in the United 
States on specimens in natural history. The English sparrows 
introduced into America have been found to construct winter- 
shelters quite different from their breeding nests. 
M. Maquenne (“ Annales Agronomiques,” vi., 321) has made 
a series of researches on the absorption and radiation of heat by 
leaves. He concludes that all leaves dissipate a part of the heat 
which they receive vertically. This dissipation takes place in 
general more from the upper than the under side. Their power 
of absorbing heat is due to the presence of chlorophyll and water, 
and is greater in thick leaves than in thin ones. 
Prof. F. Schultze has produced an interesting work on the 
development of speech in children, in which he traces analogies 
to the rise of speech in the human species. 
Dr. Schimper (“ Botanische Zeitung,” 1880, No. 52) finds that 
even in the non-chlorophyllaceous cells of plants there are organs 
which produce starch. These organs are undeveloped chloro- 
phyll granules which are capable of being converted into 
chlorophyll under the influence of light. 
