Mr. G. R. Waterhouse on the Classification of Mammalia. 399 



L. — Observations on the Classification of the Mammalia. By 

 George R. Waterhouse, Esq., Assistant Secretary and Cu- 

 rator to the Zoological Society, &c. 

 The following observations are chiefly explanatory of the accom- 

 panying tabular arrangement, in which I have attempted to group 

 the various orders of the class Mammalia so as to display their 

 mutual relations : 



In this table the orders are represented by circles : the numbers 

 in the circles indicate the order of succession in which it appears 

 to me the great groups should follow each other when it is ne- 

 cessary to treat of them as though they formed a linear series* : 

 * The extensive collection of Mammalia belonging to the Zoological 

 Society was arranged by myself, towards the end of the year 1836, in the 



