220 
TABLE I. 
Moffat 
Old. 
Moffat 
Unsized. 
Excess of 
Days of 
Unsized 
Paper. 
Days. 
Mean 
Daily Amt. 
Days. 
Mean 
Daily Amt. 
1867. 
August 
14 
2-26 
15 
3-48 
1 
September 
13 
1-80 
15 
2-71 
2 
October 
7 
0-93 
12 
2-59 
5 
Nov ember 
3 
0.19 
6 
1*22 
3 
December 
5 
0-52 
10 
1-84 
5 
1868. 
January 
19 
3-06 
19 
4-97 
0 
February 
19 
1-80 
24 
5-40 
5 
March 
18 
2-30 
22 
6*20 
4 
April 
11 
1-56 
14 
3-80 
3 
Sums 
109 ' j I HI 
137 
28 
TABLE II. 
Sized Papers. 
Unsized Papers. 
1867. 
August 
2.26 
3.38 
Ratio. 
1-49 
September 
1-80 
2-77 
1-54 
October 
0-93 
2-26 
2-43 
November 
0J9 
0-60 
313 
December 
0-52 . 
1-26 
2-42 
1868. 
January 
3-06 
4-97 
1*62 
February 
1-80 
5-03 
2-79 
March 
2-30 
5-77 
2-50 
April 
1-56 
3-20 
2-05 
Mean 
... 
2-22 
In Table II. I have given the mean daily amounts with 
each kind of paper, omitting, however, from the observa- 
tions with unsized paper all those days upon which the 
sized paper gave no indications. In the last column of this 
table are given the ratios between the amounts given by 
each paper in the previous columns, in order to see the 
relative values of the indications. The mean ratio appears 
to be 2-22 for the period in question, showing that the 
observations made with the old Moffat papers require 
multiplying by this amount to correspond with the new 
