(388) 
be effeded , at leaft in Animals near of Kin * OAs SpamW 
and Setting Dogs , Irifh Grey- hounds and ordinary Grey- 
hoands Sccc' ) 
1 5. Whether the Transfufion may bepradlis'd upon pregnant 
Bitches , at leaft at certain times of their gravidationtf And what 
efftd It wdi nave upon the Whelps 
There were fome other £lumes propofed by the fame Author 5 
as J, the weighing of the Emittent hmmol before the Operation, 
that (making an abatement for the Effluviums ^ and for the Ex- 
crements, if it voids any) it may appear, how much blood it re- 
ally lofes. To which were annext divers others^not fo fit to be per- 
ufed but by Phyfttians^ and therefore here omitted^ 
A Method 
lor ohjerving the Eclipfcs of the Moon , free from the Common- 
Jnconvemencies , as itms left by the Learned Mr. Rook, Ute 
GK{ha.m-ProfeJJor of Geometry. 
EClipfcs of the Moon are obferved for two principal ends 5 
One Aftronomicd , that by comparing Obiervations with 
Calculations , the Theory of the Moons Motion may be perfei^ed, 
and the Tables thereof reformed : the other. Geographical^ that 
by comparing among themfelves the Obfervations of the fame 
lEclipickPhajes^ made in ^//W/ places, the Difference o( Meri- 
dians or Longitudes of thofe places may be difcerned . 
The Knowledge of the Eclipfe's Qijantity and Duration , the 
Shadows, Curvity 5 and Inclination, &c, conduce only to the for- 
mer of thefe ends. The exad time of the Beginning, Middle, and 
JEnd of Eclipfes , as alfo in Tii?^^/ ones , the Beginning and End of 
T^frf/darknefs ^ is ufefulforbothof them. 
But becaufe in Obfervations made by the ^4r^ Eye^ thefe times 
conliderably differ from thofe with aTelefcope*, and becaufethe 
Beginning o{ Eclipfes, and the Endo( Tt?^^/ darknefs,, arcfcarce 
to be obferved exadlly ^ even with GlafTes ( none being able clearly 
to diftinguifli between ib^True Shadow and Ptmmbra ^ unlefs he 
hath feeuj for fome time before ^ the Line ^ feparating them, pafs 
ifllon^ upon the Surface of the Moon^) and laftly, becaufe infmall - 
Partial 
