194 Proceedings of the .Royal Society of Edinburgh. [Sess. 
before the Royal Soeiety of Edinburgh, when I learnt that he intended to 
associate my sister Jane’s name and my own with his in the calculation 
of the 15-place Table of Logarithms, I objected so strongly to having my 
name brought before the public that he was obliged to yield to me. 
“ Here I acknowledge that I was wrong in my refusal, since by it I placed 
my father in a false position. It is in order to redress this error of mine 
that I write this explanation. 
“ In November 1890 — the month before his death — when in his sick-room 
he was drawing up his “ Account,” he said to me, he did not see why he 
should not acknowledge the assistance we had given him, and I at once 
consented. 
“ My father had inscribed the volumes calculated and written by himself 
with his own name. In those calculated and written by my sister and by 
myself, he had pencilled our respective initials. He requested me, as he 
felt able, to bring our volumes to him in order that he might write in our 
names in full. His strength, however, failed him before the task was 
accomplished. Some months later I myself completed it. 
“Flora Chalmers Sang.” 
The following scheme shows the exact extent of the assistance rendered 
by Dr Sang’s daughters, Miss Jane Nicol Sang and Miss Flora Chalmers 
Sang, in preparing the logarithmic tables. The information was obtained 
from a careful inspection of the volumes. 
Number of Volume. 
Calculator. 
1 to 6 
7 
Dr Sang. 
Miss J. N. Sang. 
8 to 11 
12 to 19 
20 to 27 
28 to 30 
31 
32 to 33 
34 to 35 
36 to 37 
Dr Sang. 
Dr Sang. 
Miss F. C. Sang. 
Miss F. C. Sang. 
Miss F. C. Sang. 
Miss J. N. Sang. 
Miss J. N. Sang. 
Miss F. C. Sang. 
38 
39 to 47 
Dr Sang. 
Miss F. C. Sang. 
Number due to each, 
26 
5 
16 
