Few varieties of game are hunted more industriously than this, yet such is the fecundity of the species, that the Sportsman's Club has not as yet thought it necessary to petition the legislature for its protection.

The same statement can be made of all the many, many other known factors in development, from fecundity to concealing coloration; and behind them lie forces as to which we veil our ignorance by the use of high-sounding nomenclatureas when we use such a convenient but far from satisfactory term as orthogenesis.

The degree of fecundity or lack of fecundity between different species varies in extraordinary and inexplicable fashion in different families of mammals.

It is not sufficient for the bringing about of great events and practical results that popular aspirations should be merely manifested; it is necessary, further, that some great soul, some powerful will, should make itself the organ and agent of the public sentiment, and bring it to fecundity by becoming its personification.

The value of a pleasure is measured by its intensity, duration, certainty, propinquity, fecundity in the production of further pleasure, purity or freedom from admixture of consequent pain, and extent to the greatest possible number of persons.

The fecundity with which these ecclesiastical buildings multiplied and replenished England and Scotland is a marvel, considering the age in which they were erected and the small population and the poverty of the country.