4 i o THE POPULAR SCIENCE MONTHLY. 



sistance. In this case, in fact, the gallery is approaching either the sur- 

 face of the wood or a neighboring gallery ; a teredo is never known to 

 destroy the work of another ; that, moreover, would not serve -him, for, 

 even should he perforate the woody division between them, he would 

 drive against the calcareous tubes, which, being scarcely less hard than 

 the valves themselves, cannot be attacked by them. Whenever the 

 teredo encounters an obstacle, he simply turns aside; he acts like the 

 mole, which, excavating her trenches by preference in a rich loam, 

 makes a detour around the stones which she meets in her way, and 

 changes her direction when she comes near the breast of a ditch, to 

 avoid the open air. 



I will state, moreover, that the conclusions regarding the manner 

 in which the teredo perforates his galleries, deduced at first by Har- 

 ting from the anatomical examination of his organs, have since been fully 

 confirmed by direct observation ; Kater, having opened laterally one of 

 the galleries, so as to partially expose the animal, has seen him at work, 

 executing all the movements above mentioned. 



[To be continued.] 



ON THE DEE AD AND DISLIKE OF SCIENCE. 



By GEOKGE HENRY LEWES. 



IN the struggle of life with the facts of existence, science is a bringer 

 of aid ; in the struggle of the soul with the mystery of existence, 

 science is a bringer of light. As doctrine and discipline its beneficence 

 is far-reaching. Yet this latest-born of the three great agents of civil- 

 ization Religion, Common-Sense, and Science is so little appreciated 

 by the world at large that even men of culture may still be found who 

 boast of their indifference to it, while others jegard it with a vague 

 dread which expresses itself in a dislike, sometimes sharpened into 

 hatred. 



I shall be told, perhaps, that the growing demand for popular ex- 

 positions of scientific results and the increasing diffusion of scientific 

 inquiry point to a different conclusion. It is true that there never was 

 a time when science was so popular. It is true that every year the at- 

 tendance on lectures and the meetings of scientific associations is larger. 

 The tide is rising. The march of Science is bit by bit conquering even 

 the provinces which most stubbornly refuse allegiance to it. But, 

 meanwhile, among the obstacles it has to overcome are certain preju- 

 dices and misconceptions which are the grounds of a deep-seated dread. 

 No better illustration can be given of the general suspicion and dislike 

 of science as science than the great stress which is laid on the " iniquity 

 of vivisection," because experiments on animals are pursued for purely 



