CONTENTS. Vll 



PAGE 



The definition of species 38 



Distinction between species and varieties 39 



Criterion for homology 39 



Prepotency 39 



SELECTED BIBLIOGRAPHY OF WORKS ON THE QUANTITATIVE STUDY OF 



ORGANISM 40 



EXPLANATION OF TABLES 43 



LIST OF TABLES. 



Table I. Formulas 53 



II. Certain constants and their logarithms 54 



" III. Table of ordinates of normal curve, or values of -= 



2/o 



corresponding to values of 55 



<r 



" IV. Table of values of the normal probability integral corre 

 spending to values of ; or the fraction of the area of 



<T 



the curve between the limits and -j or and 56 



<r <r 



** V. Table of Log r functions of p 57 



" VI. Table of reduction of linear dimensions from common to 



metric system 59 



VII. First to sixth powers of integers from 1 to 30 60 



" VIII. Squares, cubes, square-roots, cube-roots and reciprocals, 60 



" IX. Logarithms of numbers 77 



" X. Logarithmic sines, cosines, tangents and cotangents 104 



