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MENDEL’S PRINCIPLES O¥ HEREDITY 829 
lists of new genera and species the arrangement is under the 
group, as, for instance, Pteridophyta, then to Natural Orders, and 
finally to species. 
It 
according t pecimens circulated. The first place must be 
given to the Japanese sent in their slips ready printed, and 
only needing to be sorted into place her bureaux, which need 
Bureau; others, again, supplied several printed copies of their 
bibliography, only requiring to be cut up, pasted on cards, and 
sorted. In addition to these diversities, there were various readings 
of the instructions. Thus, as economic botany was expressly ex- 
work must be judged as a part of the whole, and not as an inde- 
ge in 
details, or even in arrangement. e numbers of the schedule are 
purposely left with wide intervals to permit of interpolation, for 
nothing is more certain than that unexpected subjects or divisions 
will occur in the course of enumeration. One thing should ensure 
the gratitude of workers, and that is, that the annual issue 1s likely 
to appear within a reasonably short time of the close o each year, 
nD. 3, 
Mendel’s Principles of Heredity. (With Portrait.) By Ww. Bateson, 
M.A., F.R.S. Pp. xii, 212. Cambridge University Press. 
June, 1902. Price 4s. net. : 
Eneutsn biologists will be grateful to Mr. Bateson for his 
championship of Mendel as one of the pioneers in the application 
of exact methods in the study of evolution, mainly based on 
experimental observations on the affinities of closely allied forms 
of flowering plants. 
ohann Mendel was born in 1822 at Heinzendorf, in 
fi priest. — 
natural science at Vienna, he returned to his cloister, and became 
a teacher in the High School at Briinn. He was subsequently made 
bbot of Briinn, and died there 6th January, 1884. The experi- 
ments deseribed in his papers were carried out in the garden of his 
