PREFACE. IX 



objections, a suitable introduction to the important subject 

 of cranial morphology. It is with this view that we have 

 given a separate chapter on the skull, which we hope may 

 serve as an introduction to the study of Mr Parker's elaborate 

 memoirs. 



In the remaining parts, which we shall do our best to 

 complete as soon as possible, the several histories will be 

 treated with much greater brevity, and much more space will 

 be given to theoretical considerations. 



The figures, whose source is not acknowledged in the 

 text, were drawn by Miss A. B. Balfour, except a few by 

 ourselves. 



The drawing on wood was executed partly by Mr Allchin, 

 but chiefly by Mr CoUings ; and all the drawings were cut 

 by Mr Cooper. We have to thank those gentlemen for the 

 trouble they have taken in a matter in which, for many 

 reasons, the result never seems commensurate with the 

 labour. We are much indebted to Professor HiTxley for 

 having kindly looked over the proofs of the Chapter on the 

 Skull. 



The work took its origin in a course of lectures delivered 

 by myself, but many causes prevented my taking the task 

 seriously in hand, until I was joined by my friend and 

 former pupil Mr F. M. Balfour, whose share in the matter 

 has, to say the least, been no less than my own. 



M. FOSTER. 



