xxi GEORGE ROLLESTON 359 



earliest and most complete examples of instruction by the 

 study of a series of types, now becoming so general. As he 

 says in the preface, " The distinctive character of the book 

 consists in its attempting so to combine the concrete facts of 

 zootomy with the outlines of systematic classification, as to 

 enable the student to put them for himself into their natural 

 relations of foundation and superstructure. The foundations 

 may be wide, and the superstructure may have its outlines not 

 only filled up, but even considerably altered by subsequent and 

 more extensive labours ; but the mutual relations of the one 

 as foundation and the other as superstructure which this book 

 particularly aims at illustrating, must always remain the same." 



Besides this work, Professor Eolleston's principal con- 

 tributions to comparative anatomy and zoology are the 

 following : " On the Affinities of the Brain of the Orang- 

 Utan," Nat. Hist. Revieiv, 1861; " On the Aquiferous and 

 Oviductal System in the Lamellibranchiate Molluscs " (with 

 Mr. C. Eobertson), Phil. Trans., 1862; " On the Placental 

 Structures of the Tenrec (Centetes ecaudatus), and those of 

 certain other Mammals, with Remarks on the Value of the 

 Placental System of Classification," Trans. Zool. Soc. 1866 ; 

 " On the Domestic Cats of Ancient and Modern Times," 

 Journal of Anatomy, 1868; "On the Homologies of certain 

 Muscles connected with the Shoulder-joint," Trans. Linn. Soc. 

 1870 ; "On the Development of the Enamel in the Teeth of 

 Mammals," Quart. J[ourn. Micros. Soc. 1872; and " On the 

 Domestic Pig in Prehistoric Times," Trans. Linn. Soc. 1877. 



Latterly he did much admirable work in anthropology, for 

 which he was excellently qualified, being one of the few men 

 who possessed the culture of the antiquarian, historian, and 

 philologist on the one hand, and of the anatomist and zoologist 

 on the other, and could make these different branches of 

 knowledge converge upon the complex problem of man's early 

 history. The chief results of his work of this nature are 

 contained in his contributions to Greenwell's British Barrows 

 (1877), a book containing a fund of solid information relating 

 to the early inhabitants of this island. His last publication, 

 and one which is, on the whole, the most characteristic, as 

 exhibiting his vast range of knowledge on many different 



