OfOXFO^V-Stil^E. Hi 



hide, arid all the Echinites, fome whereof are plainly, all in fome 

 meziuYefiellatedzt the top. 



i 27. The Belemnites which are all Striated from a Centtf i yet 

 in the whole afleft a pyramidal form ; feem to have fom what alfo 

 of an Antimcnial, but a more prevalent quantity of a nitrcm 



fah. 



128. theConchites, Pelinites,i\nd Oftracites, whether tranf- 

 verily firiated, or from the commijfures to the hot, feem to own 

 their origin to urinous falts, which shoot likewife from a Center 

 (as fuppofefrom the hinges of thefe fiones*) but generally are moft: 

 extended to one fide, as may be feen in the branched figure form- 

 ed on the furface of urine by freezing, in Mr. Hooks Micrography" 1 5 

 whofey?ri< not obtaining much above the quadrant of a circle, 

 whatever other difference there may be, in this refpecl at lead is 

 agreeable to our fiones. 



129. To which add the Ophiomorphifs, or Corn u a Ammonite 

 mod probably formed either by two falts shooting different ways, 

 which by thwarting one another make a helical figure, juft as two' 

 Oppofite winds or Waters make a Turbo ; or elfe by fome fimple, 

 yet Unknown fait, that afters fuch a figure: perhaps the items 

 and branchings bended in a moft excellent and regular order, like 

 the ribs of fome of our Ophiomorphit's, obferved by Mr. Hook.* 

 in Regulvs Martk flellatut, might not a little conduce to the clear- 

 ing this matter. 



130. How near I am to the mark inthefe former Conjectures, I 

 dare not too temerarioufly refolve : But as to the formation of 

 the Rkomboideal Selenites,Tab. i.Fig. 1. with a little mote con- 

 fidence I fhall venture to pronounce it, to come from a Tartareou* 

 fait in the Earth ; having obferved in the Honorable Kr.BoyPs 



way of preparing Tartarized Spirit of Wine r , that the Calx of 

 Tartar being fated with the phlegm atick. part of the Spirit, and 

 diflblved by the heat ; fetto cool, fomtimes (hoots (I dare noE 

 fay always) exa&ly into fuch Rhomboideal figures made up of 

 plates, and the whole Rhomboids fomtimes ifluing out of one an- 

 other, juft as we find the Selenites often do. 



1 3 i . More might have been added concerning fome othef 

 formed 'y?owj- hereafter to be mention'd ; but I have now only time 

 to hint my Hypcthefis, which I fuppofe may be fufficiently done 



s li.Jan. * Mkrographiaolifcrv.i^ f EfTay i. of the u'nfuccefsfulnefs of Experiments. 



Q 2 hi 



