and  Composition  of  Uranium  Compounds. 
Table  III.— Pitchblende,  No.  2, 
183 
w.                                a. 
w 
a 
i :. 
2 
3  '".".'.''". 
4  
5  
•3056                       2-126 
•3026                        2-220 
•2412                        2-130 
•1488                        1-673 
•1346                       1-616 
•1438 
•1363 
•1133 
•08S9 
•0833 
•0716 
•0701 
•0673 
•0648 
•0638 
(™)  =-0594 
Wo 
6  
7  
•0S37                       1-170 
•0657                          -938 
1     8  
9  
10  
•0631                         -937 
•0470                         -725 
•0407                         -637 
Table  IV. —Pitchblende,  No. 
a*. 
w. 
•9060 
w 
a.                               — 
i                a 
I 
2-924                            -3009 
2 
•5007                        2-920 
•2207                        2-675 
•1559                        2-275 
•0S55                        1  -f»89 
•1715 
•0825 
•0685 
•0541 
•0526 
•0501 
•0511 
•0442 
•0165 
•0467 
3  
4  
6 
•0706 
•0618 
•0580 
•0360 
•0332 
•0273 
1-343 
1-235 
1-135 
•815 
•714 
•584 
8  
9  
10  
11  
I 
(w)  =-0400 
Wo 
Table  V. — Gummite,  No. 
4. 
w.                                 a. 
w 
a 
1 -2764                       2-318 
,     2  1            -1810                       1-958 
•1192 
•0924 
•0600 
•0600 
•0595 
•0591 
•0548 
3  -0704                       1  173 
1     4  -0686                        1143 
1     5  -0654                       1-099 
6  -0570                         -9()5 
7  "0472                         -862 
*  The  activity  measurements  represented  by  Table  IV.  were  made  by 
Miss  Emma  Carr,  to  whom  I  wish  here  to  express  my  thanks. 
