CONTENTS. Vll 



PAGE 



The definition of species 38 



Distinction between species and varieties 39 



Criterion for homology 39 



Prepotency 39 



SELECTED BIBLIOGRAPHY OP WORKS ON THE QUANTITATIVE STUDY OP 



ORGANISM 40 



EXPLANATION OP TABLES 43 



LIST OP TABLES. 



Table I. Formulas 53 



" II. Certain constants and their logarithms 54 



V 



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



2/o 



OS 



corresponding to values of 55 



CT 



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



oc 

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



(T 



X OC 



the curve between the limits and -j or and -56 



cr a 



" 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 



