iV PREFACE. 
many of its own special publications. Mammals and Fishes in 
the order named come next in popularity; after these Reptiles 
and Crustacea; the other Orders are treated in a more sporadic 
manner. If this is the evidence of ‘THE Zoonoaist’ to the 
present date we may well speculate on the conclusions that may 
be drawn when another sixty-six volumes are completed. The 
trend in zoological study over a given period is an important 
factor in the estimation of biological speculation, and the 
breath of philosophical theories as regards animal life during 
different generations or individual life epochs. We must often 
considerably value a theory or conclusion by the personal 
equation, by the knowledge and personal and mental attitude 
of its promoter, as well as by the zoological standpoint of his 
day. ‘Tur Zoonocist’ reflects the latter over a considerable 
_ number of years. 




































































































































































