r.i3oi] 
FRANCISCI WILLUGHBEII Amig. 
de Hiftoria Pifcium libri quatuor^Juj^u i£/ Sump- 
tihu6 Soeietatis Regi^ Lond. editi. lotum 
opm recognovit^ coaftavit^ fuppkvit^ Librum 
etiam primum isr fecundum iniegros adjecit J O- 
^ H ANNE S R ALUS e Socictate Regia, 
Oxonii e Theatro Sheldoniano^ 1686. 
I need fay no more concerning the publifhing of this 
work, or thofe worthy Perfons who have moft con- 
tributed thereunto, then what is already contained in 
the Title, the Dedicatory Infcription, and the Prefaces 
however I cannot orait that we ow much more, then 
is there intimated, to the indefatigable Induftry of M' 
John 'Kay, a Perfon of polite and incomparable Learn- 
ing, and of a moft exquifite Judgement, efpecially in 
the Hiflory of Nature. 
The work is divided into 4 Books, the firft treats of 
Fifties in Generall ; the fecond of the Cetaceous or Whale 
kind : The Third of Cartilagineous Fifties, that have 
griftles inftead of Bones; the fourth and laft of thofe 
they call Spinoje Fifties, that have fmali fliarp bones in 
their Flefti ; after which is annext a large Appendix. 
In the firft book are confidered both the internall and 
externall parts of Fifties, as well thofe common to them, 
with other Animals^ as thofe proper and peculiar to this 
kind 5 and the differences of the former, from thofe of 
like kind and denomination in Land Animals obferved: 
The parts thus compared and confiderd, are the Eys, 
Mouth, T^eth, Tongue, Gills , Fins , Scales , Briftles, 
Beards, Lines : The Brains, the Stones found in their 
Heads^ the fwimming bladder, Gullet, Ventricle, Ap- 
pendices^ 
