( ' 2 * ) 
a fmall Spin* in die middle ( d .) at the fore Extremity whereof, 
it being further extended than the Ethmoides, there is another ' 
Hole. From this Crifia Galli run on each fide feveral prominent 
convex Lines, fome obliquely forward, o hers obliquely back- 
ward, others tranfverfely ; each of which is branch'd out twice 
or thrice toward the Circumference, which ’ttfas impoflible 
to exprefs very lively in fo fmall a Figure. Thefe Lines have 
fome few Perforations running from their higheffc part, but , 
Kofi of them are betwixt their interfaces, where they are plea- 
fantly difpers’d after fome kind of order, which alfo we could 
not exprefs in the Figure The Os Ethmoides is not unlike a Os Eth- 
Heart, as they ufually reprefent it, being narrower at the hind moides- 
part, where the a interior Fojfa runs (height down from the fore- 
part of the ScllaTurcica ( » ) and broader at the fore-part of the 
Bone, which runs obliquely upward from it ; ’tis from before to 
behind 3 \ Inches, and from the right to the left 4 Inches : Its 
Circumference is not altogether circular. The Speciality of this 
Strudure gives ground to enquire into its Reafon, and the acute 
Senfation of Smelling, wherewith, according to all Authors, this 
Animal is endued In molt of other Animals, neither is this ante- 
ri»r Production of the Brain fo great, the Perforations of the Os 
Crtorofum fo many nor its extent fo large : But in Animals of an 
acute Smelling, befides the Perforations of the Os Cribrofum , there 
are feveral fpongious Lamina which arife from its lower p2rt *, 
each whereof are endued with Tunicles, wherein are variouily 
difpers’d feveral Brandies of the Nervm Olfattoritu ^ and thefe 
Lamina are fet very near to one another, as it were the Teeth 
in a Comb, or the Lamella in the lower Part of fome Mufhromes, 
Both the Contrivance of the Lamina and their thick difpofal, are 
very ufeful for Senfation •, for whereas, had this Nervm 01 - 
fattorius been ftiU in one Trunk, the Volatile Saline Particles 
would have only a&ed upon fuch Filaments as compofe the Sur- 
face } whereas the Nerve being varioufly difpers’d into divers 
Branches, and thefe Branches differently difpos’d into feveral 
Surfaces, ’tis capable to receive Imprdfion from as many Saline 
Particles, as there are different Branches and Surfaces, whereinto 
thefe are difpos’d : Add alfo-, that the fharp Edges of thefe La - 
tnina being toward the Air, they are more capable to divide the 
Column a Aens luck’d in by the Nofe, and give a greater tenfioa, 
to the Nervous Filaments difpers’d in them whereby the. Senfa- 
tion is communicated, the, more lively to. the Sipfarim. Commune y. 
