102 



mines these different effects, we must first obtain some additional 

 inlets of experience, by which we may get acquainted with the pro- 

 perties in question, and by which we may be enabled to distinguish 

 their modifications from their regularities; we must even go further 

 or we shall yet be but imperfectly taught, we must have a perception 

 of the tendencies, or a familiarity in the history of the causation of 

 the regular and the occasional. And until we have obtained these 

 additional inlets of experience we must be contended to define rela- 

 tions in a more limited way, in conformity, as has been done in the 

 present case, with the largest class of facts and the most general 

 indications. 



I conclude this chapter on the fecundated ovum with observing 

 that many of the processes which are discussed in it belong also to 

 the subsequent conditions of life, and that therefore the more ample 

 consideration of some points already touched upon will be reserved 

 to a future part of the subject, when the illustration will be less 

 abstruse, because the facts are more familiar. 



