IbrEh r it was covereQ over with grafFgreeo matter^ whieli foxin 
dryed,;^id left che^ftoM ola'whicifc coBer, as rris'tc^^/feeb^ 
Ir is but fight in proportion ta its buik, weighing about 7 graim?. 
a-od'tismuch of the ftape of oiir ordinary horfe-beans* Therei 
are vifible im.preffions upon it of feme C%illary- and fmall'veflt 
e!s , it wasbredamoogft,- Laft!y5 ;Mls:ffe^brotS 
iikej., akhoughthefubftance is-^T^^^ 
The A'GCideots: accompaoing the working away of thisStoneg 
"(for the iocifion was meerly obftetrical,) and the place of its 
birth give occafion to call the diftemper a Ranula. Yet in truth 
\this was nothing ei(e but one of thofe Tumours CdWcdJtheromai 
and therefore w^ v^\\\mm^ 
'An ExtraUof a LetUr of the farns- Mr, Lifter^ written from York 
Jprilii., \6J2^ cometning mixa^ittd Horfe4iairs;rr^i/5^?V'a 
Vulgar Error. 
I Cannot difeover any thing new ^nd rare in natural Philofo^ 
, phy^l>utTmn{l forthwith make you participate of my'good 
fortyne; and I affure yoUjthe relational am about to m^ke you^ 
isofathingvery furprififlg. 
;'lt;hpEh been,-C-i:€dib}^ thzt H^rfe hairs thrown ihto 
waftei- will be ammated 5 and yet I fliall fliew you by an tfnqueff^ 
ionable obfervation,that fuch things as are vulgarly thought an> 
mated Mairs,are:very l0fefts nourifhed wiiliin the bodies ofo- 
therlpfe^tsjeven as Lchmumones are within the bodies of Cater* 
pilUrs., ; 
^ iilpremife the palrticuhrs CDnceroing thisAnimal^as I find 
thetti dollefted by the IndxxS^'^ o^^ldrwandus^xxd ^twt you the 
trooble of that voluminous Author* 
^ -llii.s Infec3'( faith he )- feems tO'- haYe been unknovs^n to the^ 
Ape icp t$ ^, as it ;i§ ^^alied by the- tnoderip ^'-fifa aquaticu. of vermr 
ptarimjmhtt^Bpm the moft^flenderfigure'of the b^ody 5 or be- 
c^gfeic : thought i;o:be ^ generated; of an horfe-hair putrifyiog- 
in wate.^ite-GerminS:€;al^^ amme rendred- VituUaqua' 
' 'It is:!y^d k^aiTu^rmaters-^^ of horfe-hair yfov (faith- , 
jfperi^s'BfQ0/iMBmnp f^CfKMa^lg^tlas" l''find;him <^ by _ 
^4d(m^:^^-i%^t^hhw wtrer^moiMe Wmi are' 
