[ ?7o ] 
join CP and CA), and let A J^be perpendicular to 
CP in 6), then will the Angle CD AT be equal to 
i^A P, and we (hall have P Cj A Q : : P C : A) C : ; 
V5P* : V £ DA : V LC+LK-- VLC—LK ; : 
\/ 4 : V 2 : : 2 : 1 : : AC : A L. Consequently the 
Angle QL P = A LC y and C L'P = C L B y or the 
obtufe Angle of the Rhombus CLBl is equal to 
CAP, the obtufe Angle of the Trapezium j and 
consequently, the Three plane Angles that form the 
Solid Angle at A, or the Apex at /, are equal to each 
other: From which it is obvious, that the Four acute 
plane Angles, which form the Solid Angle at C or P, 
are likewiSe equal among themfelvcs. 
Though Monfieur Maraldi had found, by his Men- 
suration, thete obtuSe Angles to be of about no 
Degrees 5 the Small Difference between this and the 
109°. 2 S'. i6 // , juft found by Calculation, Seems 
to have been either accidental, or owing to the Diffi- 
culty of meafuring Such Angles with Exadlnefs : 
Befides that he Seems to admit the real Equality of 
the Several plane Angles, that form as well the Apex , 
as the other Solid ones we have been treating of. 
And, as to the Small Difference between our Angle 
and that determined by Mr. Koenig , who firft confi- 
dered this Problem, but has not yet publifhed his 
Demonftration of it, that can only be owing to his 
not carrying on his Computation So far, and would 
Scarcely have been worth the mentioning, were it 
not yet in Favour of the Practice of thefe induftrious 
little Infedts ; and did it not therefore give us ground 
to conclude, that in general, and when the parti- 
cular Form and Circumftance of the Honey-comb 
does not require a Variation from their Rule, 
the 
