Quo facile dignofcatur quot future fint Radices Affir- 
mative, quot Negative, in iEquationibus ad Cofinus, 
hxc obfervetur Regula. 
Si fuerit n Numerus par, tot crunt Radices Affir- 
mative quot Negative. 
Si fuerit n numerus impar, talis tamen ut — - — , fit 
71 1 
numerus par, numerus Affirmativarum erit — - — , nu- 
xt • n-\-i 
merus Negativarum — - ■. 
Sin ~~~ fuerit numerus impar, numerus Affirma- 
tivarum erit Til, Negativarum 
72 1 
2 
Aliqua hue fpedanria jampridem inveneram, quae 
AdisPhilolophicis inferta fuerunt Anno 1707, deinde 
fufius fuerant expofita in Libro, qui infcribitur Mtf- 
cellanea Analytical fed cum ratio proceflus iuerit huic 
paulo diffimiiis, nec fortafle adeo dilucida, nec di- 
rede ad eundem fcopum collimans, hec, fpero, non 
inutilia judicabuntur. 
f 1 n i s: 
ERRATA. 
Page 40. Une penult, for Meafurations, read Menfurations. 
P. 384. after l. 11 . add and if finglej whether the refpedtive Poles 
were oppofite ? 
E R R A TU M. 
In Vol. XXXIV. n. 393 .p. 66. the Latitude ofSouthwickfioufd be 
5 2° 31/. nearly, inftead of 5i°58 / . nearly, as it is by Miftake there 
■printed. 
To the Bookbinder . 
The Creonean Leftures on Mufcular Motion for the Year 
1738. are to follow this Page. 
Three Lectures 
