[ '75 ] 
Latitude. 
Longitude 
Sun’s 
Variation. 
North. 
Weft. 
Alti- 
Weft. 
0 
/ 
0 
/ 
tude. 
0 
! 
2 S 
55 
39 
28 
27 
5 " 
23 
29 
8 
40 
26 
7 
12 
31 
10 
44 
46 
30 
8 
6 
3 I 
7 
46 
45 
22 
4 
46 
30 
42 
49 
38 
4 
40 
30 
29 
49 
48 
22 
4 
■30 
31 
52 
10 
25. 
4 
49 
30 
18 
25 
4 
45 
30 
23 
55 
25 
4 
22 
30 
58 
57 
30 
22 
4 
52 
37 
9 
68 
38 
4 
50 
VI* Some Thoughts and Copje<5tures concern" 
mg the Caiife of Elafticity, hy J. T. Defa- 
guliers, LL. !Z). F. R. S. 
A Ttradion and Repulfion feem to be fettled by 
the Great Creator as firft Principles in 
Nature 5 that is, as the firft of fecond Caufes ; fo that 
we are not felicitous about their Caufes, and think 
it enough to deduce other Things from them. If 
Elaftidty was admitted as a firft Caufe, (as it is by 
fome) it is thought we fhould admit of too many 
principal Caufes in Nature, which is contrary to the 
Rules of good Philofophy. Philofophers therefore 
have endeavour’d to deduce Elaftidty from Attradion, 
or from Repulfion, or from both. It is obferv’d’, 
that the fame Particles that repel each other ftrbngly, 
Z will 
