empty^ others are filled with Criftalin Fluors 5 others I 
havefeea half full of the laid bluifti Clay of the Bed, 
and halt full of rhe (aid Cridalizacions, which have 
ftuck therein , from nothing but fubterraneous heats 
and efflaviiinis* 
Amongit thele Fiih in this Qiiarry, I have feen feve- 
ral great rforle-mufcics, fuch as breed in frefh Water 
Rivers and Ponds, which are exaftly like that in Gef- 
ner de Pifc, p, 231. called Concha Longa. RoiideleHiy 
but are more thick, fail and pubble.than ours common- 
ly are at this day, which greatnefs and largenefs pro- 
ceeded from nothing bat the fertility and fatnefs of 
the Bed on which they breed 5 and as if thefe Beds yet 
had for all chat they are turned into Stone, fbme ver- 
tue to the enlarging" of this fort of Shell-fifli, fo there 
are at this day in an old Pond beyond Broughton Hall^ 
fome of the largeft fort of this Shell-fiili that ever I 
faw, as if this Soil agreed better to the breeding of this 
fortofFifti than any elfe» 
Juft as fome forts of Fifh breed beft upon fome forts 
of Soils, as the Corm Ammonis^ Nautili and others,. up- 
on Allum Soils, and that is the Reafon that they are 
found fo much at Whitby^ Rochel^Lunenbitrg^ Rome^ 
and other places, where are famous Allum Mines. And 
if any one v/ould find any of thofe forts of Fifhes, 
f which fome Learned Men have ridiculoufly thought 
to be Species totally loft) they ought in all probabiUty 
to feek for them upon Allum Soils in the Sea, and there 
they would undoubtedly find them 
Other forts of Shell-fifti, as Mufcles, and fome (orts 
of Coclites, love a Rich Clayey Soil, and there they 
breed beft, as we commonly fee in frefh Waters, Ri- 
vers and Ponds. Here it is that they are found in fuch 
plenty in the aforefaid Stones of the Qiaarry of Braugh- 
ton^ which manifeftly appears to have been a Bed of a 
tough bluiftiClay, in fome AnudihvianX.'^^. 
Other 
