ME. W. CEOOKES ON THE ATOMIC WEIGHT OE THALLIUM. 
log £=1-5603916 + 5-6225357-— 10 ; 
.-. -=7-1829373-10; 
£=0-001524. 
log 4=5-6225357 — 7-0815920 ; 
° k ’ 
.-. 7=8-5409437 — 10; 
A- 
n =|=0-034749; 
.*. 1 — w=0-965251. 
m=766-122626 — 765-814578 + 0-044547 — 0-001524; 
m=0-351071. 
m 0-351071 . 
C ~ 1 —n ~ 0-965251 ’ 
£=0*3638. 
7^=765-814578 — 0-044547 + -3638 ; 
.-. 4=766*133831. 
WEIGHING OP GLASS APPARATUS + NITRATE OP THALLIUM. 
Vacuum-balance. 
In air. Left pan removed. Platinum weights. 
After third heating (to fusion) and cooling : — 
Weights. 
True value in air. 
Weight of ail- 
displaced. 
Volume in water at 
mas. density. 
600 
599-998340 
0-035533 
28-970 
100 
99-991420 
5887 
4-800 
60 
59-993232 
3483 
2-840 
30 
29-999991 
1668 
1-360 
6 
5-998268 
355 
•290 
o 
0 
3-000469 
171 
•140 
•06 
0-061472 
3 
•003 
•0031 
0-003099 
0 
•000 
799-0631 
799-046291 
0-047100 
38-403 
Pan=206-3733 
206-379646 
0-012040 
9-824 
1005-4364 
1005-425937 
0-059140 
48-227 
Therm. = 73° F.=22°-7 C. 
Barom. =29-891 in. at 0° C. = 759-22 millims. 
1005-425937 
765-814578= weight of glass apparatus (see w, preceding). 
23 9- 61 135 9= weight of thallium nitrate in air. 
