NEW PHYTOLOGIST .REPRINT No. n 
THE ORIGIN AND DEVELOP¬ 
MENT OF THE COMPOSITAE 
BY 
JAMES SMALL, D.Sc. (Lond.), Ph.C. 
Professor of Botany in the Queen's University , Belfast 
pp. xii + 334, including Extensive Bibliographies 
With 12 maps and 79 figures in the text 
STIFF BOARDS, HALF CLOTH PRICE ONE POUND Net 
Nature (10 June 1920), says: 
M His contribution to the investigation of the origin and development of 
the family is by far the most important that has appeared for many years. 
Conclusions are drawn to the effect that the Senecioneas are the most 
primitive type of the family and that from them directly or indirectly, 
and ultimately from Senecio itself, as the basal genus from which the 
Senecioneae arose, there sprang all the other tribes and genera of the 
family. This is very strikingly confirmed by a study of the geographical 
distribution.” 
WHELDON & WESLEY, Ltd., 2, 3 & 4 Arthur St, New Oxford St, 
LONDON, W.C.2 
NEW PHYTOLOGIST REPRINT No. 12 
MUTATIONS AND EVOLUTION 
R. RUGGLES GATES 
Professor of Botany in the University of London {King's College) 
pp. vi + 108, including Extensive Bibliography 
BROWN PAPER COVER PRICE SIX SHILLINGS Net 
T HIS work presents, in an attractive form, the latest 
facts and theories relating to the causal factors of 
mutations, the place of mutation in evolution, and its 
relation to the inheritance of acquired characters. It 
deals with material derived from both animals and plants. 
“This is a valuable compilation and discussion by an excellent 
authority of the most striking facts connected with the occur¬ 
rence and inheritability of mutations.” —Eugenics Review 
WHELDON & WESLEY, Ltd., 2, 3 & 4 Arthur St, New Oxford St, 
LONDON, W.C.2 
