Member alfo of the faid SocietyjCDr^ri/^^^^^^ 
wifcj by a carious examioacion of Eggs not yet incubated, ve- 
ry happily founds in conformity to the difcovery of Signer 
M^g^ the Rudiments of a Chick adually cxiftent in the 
Egg even before incubation Of which he produced a written 
dilcourfebefore the (aid Society il/^r(;/& 14,1^715 which he 
affirmed to have been written a good while before^ and which 
was read in part Mir^:/^ 28* 1672. at the publick Meeting of 
the faid Society.'who do hope^that the faid DoBor will make no 
difficuIty,for confirmation and further excitemeDt, to coramu.- 
nicate alfotothepublicfc his learned Oblervations upon this 
fubject* Whichbeing thus premird3 wefliall now proceed 
briefly to take rioticej that this Exercitation of Sigaor Malpi- 
gbi^v/hich cm^QtothQ R,SocietyyFeb.22,i6i~, contains an ac- 
compt of his having, by carefuU and diligent Obfervations, 
difcover'd, that in /^row^ Eggs, gi%wt\\befbre as ^//^r incubati- 
on, the firft Rudiments and Lines of the principal parts of the 
Chick arc contained in the Eggs 5 whereas in Subventanem or 
Jdle Eggs, inftead of fuch a formationj there is found nothing 
butanun-form'd globousafii-coloured body^ like a mola. Of 
thefe prima (lamina or beginnings, this Author hath traced the 
progrefsjby obferving their changes, after incubatioUj every 
iix hours, for the two firft days; and, after that^every i i or 24, 
or 48hours. In the doing of which, he hath obferv'd many , 
very curious and remarkable particulars, efpecially about the 
Priority of the Motion of theHeart bejcre the production of W 
bloody though that liquor, before it becomes red.bejaccordiDg 
to him, before the motion of the heart ; as alfo about the faid 
liquor firft emergingjt^i;^. whether it be a fimple coHiquamentum^ 
or aliquar vitalis^ or a fanguis inehoatm : Goncerniog which he 
aflerts, that the Carina^ and the beginnings of the head, brain, 
and Spinal Marrow, do manifeftly appear before the Collecti- 
on of that Liquor-, and its motion^ and change into the nature 
of Blood : For which^ and many other confiderable particu- 
lars, fince ihey cannot be treated in fuch ao abftract as this 
without prejudicing the v^hole, we are t)bliged to remit the 
Reader to the intire difcourfe it felft 
