i05G 
PROFESSOR W. N. HARTLEY OH 
Plate 3. 
“ Blow ” commenced at. 
Bands flashing out at. 
The metal became too hot and the converter was turned 
down. An ingot mould was charged into it at . . . 
Blowing re-commenced at. 
1st exposure (Si minutes). 
To. 
2nd exposui’e (2 minutes). 
To. 
Plate 4, 
Blow ” commenced at. 
Sodium line flashing out at. 
Lithium line ,, „ . 
The continuous spectrum was extremely brilliant, the lines 
and the manganese bands seen upon the continuous 
spectrum were very intensely brilliant. The metal was 
too hot, and the converter was turned down at ... . 
Blowing re-commenced at. 
1st exposure (1 minute) at. 
4nd ,, ,, ,, .. 
3rd ,, ,, ,, . 
dth ,, ,, ,, . 
Eiid of “ blow ”. 
h. m. 
12 30 
12 .34 
12 45 
12 47 
12 49 
12 52i 
12 52i 
12 54| 
h. m. 
1 20 
1 22 
1 23 
1 26 
1 30 
1 31 
1 32 
1 33 
1 34 
1 35 
Plate 5. 
h. m. s. 
“ Blow ” began at.2 3 0 
The sodinm line flashed out at.2 6 0 
The manganese bands flashed out at. 2 7 30 
1st exposure (30 seconds) at. 2 9 30 
“ Blow ” interrupted, conveider tuimed down at ... . 2 10 0 
Blowing re-commenced.2 17 15 
2nd exposure (30 seconds) at.2 18 0 
Till.2 18 30 
3rd exposure (3 minutes) at. 2 20 0 
Till. 2 23 0 
Plate G. 
Pteceived four exposures of 1 minute to minute each, but there was nothing of 
any use upon the plate. In all probability this was owing to the large body of fumes 
formed when the converter was turned down before the plate had been exposed. 
The metal w^as too hot, as may be readily understood from the fact that the manganese 
bands were flashing only 4h minutes after the commencement of the blow. 
