( 5o8o ; 
Member aUo of the faid Society ^{DuPFilUam €ro$n,)h2Lth like- 
wife, by a carious examination of Eggs not yet incubated, ve- 
ry happily found^ in conformity to the difcovery of Signor 
Malpight^ the Rudiments of a Chick aftually cxiftent in the 
Egg even before incubation Of which he produced a written 
dilcourfe before the faid Society i^/^r^^ 14» id/i 5 which he 
afiBrmed to have been written a good while before, and which 
was read in part i^/<irr^ 78* 1672. at the publick Meeting of 
the faid Society:who do hopCjthat the faid DoBor will make no 
difHculty^for confirmation and further excitement, to commu-- 
nicate alfo to the publick his learned Obfervations upon this 
fubjccc*. Which being thus premil'd, we fhall now proceed 
briefly to take noticcj that this Exercitation of S'gnor Malpi- 
^Z^?, which came to the R,Society^Feb,72,\6\},, contains an ac- 
comptof his having, by carefull and diligent Obfervations, 
difcover'd, that in /^^^0«^ Eggs, as vf^W before as afnr incubati- 
on, the firft Rudiments and Lines of the principal parts of the 
Chick are contained in the Eggs 3 whereas in Subventaneous or 
Adle Eggs, inftead of fuch a formation, there is found nothing 
butanud'form'd globousafti-coloured body^ likea mala. Of 
thcfc prima (lamina or beginnings, this Author hath traced the 
progrefs, by obferving their changes, after incubation, every 
iix hours, for the two firft days; and, after thatjCvery 1 1 or 24, 
or48hour$. In the doing of which, he hath obferv'd many 
very curious and remarkable particulars, efpccially about the 
Priority of the Motion of tbeHeart before the production of true 
bloody though that liquor, before it becomes red,be,according * 
to him, ^^^r^ the motion of the heart J as alfo about the faid 
liquor firft cmergwg^vi^, whether it be a fimple colliquamentum^ 
or a liquor vitalis^ or a (anguis inchoatus : concerning which he 
airerts,tbat the Carina^ and the beginnings of the head, brain, 
and Spinal Marrow, do raanifeftly appear before the GoUecti- 
ou of that Liquor, and its motion, and change into the nature 
of Blood •• For which, and many other confiderable particu- 
lars, fince they cannot be treated in fuch an abftract as this 
without prejudicing the whole, we are obh'ged to remit the 
Reader to the intire difccurfe i: felf^ 
IV* De I 
I 
