xliv YORKSHIRE—VERTEBRATE FAUNA. 
A General Summary of the Vertebrate Fauna of York- 
shire and of the British Isles, may thus be expressed :— 



Yorkshire. | British | 
MAMMALIA: 
TERRESTRIAL -— - 32 45 
MARINE - - - 14 2i7 
BIRDS T=) =e -e ra eet ae 307 380 
REPTILES): 
TERRESTRIAL - - 4 il 
MARINE - - - 2 
AMPHIBIA eS, eS 6 7 
FISHES: 
FRESHWATER - - 32 53 
MARINE -2 - | .- 116 196 
513 717 




Few words are needed.in concluding the introductory obser- 
vations. The plan of the work, as defined in the opening 
paragraph of the introduction, has been rigidly adhered to, the 
necessary information as to the faunistic position, migrations, and 
geographical range of the various species being expressed with 
studied brevity, irrelevant matter carefully excluded, and literary 
style invariably subordinated to scientific accuracy. The only 
deviation from the rule of brevity is in the case of species like 
the Great Bustard and Common Seal, which have become extinct 
so recently as to impose upon naturalists the moral obligation to 
search out all the traditions while they are fresh in the memories 
of men, and to rescue from oblivion every possible scrap of 
evidence. 
In the case of rare species in the public museums of the 
county, and also in a few of the instances of their being in 
private collections, it is deemed useful to indicate where they are 
now preserved. 
