372 
DR. P. E. SHAW ON THE NEWTONIAN CONSTANT OF 
Supposing the carbon is not to be cooled, it is given layer after layer of cotton wool 
and is otherwise screened from heat rising from below. 
10. Description of Experiments .—At the commencement of readings, set the masses 
M, M, at position A (shaded in fig. ll). Watch the beam mirror with the telescope 
A 
5. 
□ 
□ 
d 2 
0 - 
m 
m 
Fig. 12. 
m 
m 
A 
d 
/ 
Various forms of suspension used. 
and set down the extreme readings as the beam swings. When three such readings 
have been taken, rotate M, M to position B, and proceed as before. For every position, 
A or B, the tube mirror reading (S 2 , fig. 6) is taken by the telescope. 
In Table I. are shown the results of an experiment with cylindrical masses. 
