213 
The above list will serve, better than any words of mine, 
to illustrate the great and growing importance of Mendel's 
discovery, *and will give ttie general reader some idea of the 
remarkable developments that have taken place during the last 
few years in the application of Mendelism to plants^ animals^ and 
man. Thanks largely to the labours of Bateson and his co- 
workers^ a new science — the science of Genetics — has been 
built up on a Mendelian basis. This science^ with its modern 
methods of factorial analysis^ and pure-line breeding, promises to 
provide Solutions to many problems of heredity and Variation^ 
hitherto obscure. 
Notwithstanding the short time that has elapsed since 
MendeFs memoir was discovered, the influence of Mendelism is 
already being felt^ not only in the academic world of ßiology, 
biit also in the practical Arts and Industries related thereto. 
In the ancient arts of Agriculture and Horticulture^ for 
instance^ new races and strains innumerable are being built up 
and isolated by the aid of the Mendelian principles^ and it is 
impossible to estimate the vast economic results that may result 
therefrom. 
In the old science of Medicine and the new science of Eugenics, 
the Mendelian principles have already^ in certain cases^ shed a 
clear light where before was utter darkness. 
In the systematic sciences of Botany^ Entomology, Orni- 
thology, and Zoology, systematists are already beginning to utilise 
the Mendelian principles to assist them in the determination of 
their species and varieties. 
The influence of Mendelism in modifying the Darwinian 
conceptions of Evolution^ is already considerable^ and the reflex 
of this influence must^ sooner or later^ be feit in the more remote 
regions of Philosophy. 
i 
