1867. 
Mean of 
Horizontal 
■ Movement of 
Air in Miles 
when Ozone 
was found. 
Mean Amount 
of Rain-fall 
in Inches 
when Ozone 
was found. 
Mean Amount 
of Ozone 
found. 
Mean of 
Horizontal 
Movement of 
Air 'In Miles 
when no Ozone 
was found. 
Mean Amount 
of Rain-fall 
in Inches 
when no 
Ozone was 
found. 
January 
130 
•105 
2-74 
43 
•001 
February 
159 
•088 
3-40 
30 
•003 
March 
200 
•038 
3-57 
22 
•012 
April 
222 
•147 
5-60 
7 
•006 
May 
135 
•041 
2-29 
31 
•016 
June 
87 
•037 
1-86 
40 
•007 
July 
73 
•118 
1-48 
45 
•052 
August ...... 
30 
•038 
1-42 
26 
•014 
September... 
75 
•046 
1-96 
37 
•067 
October 
65 
•078 
1-48 
43 
*054 
November . . . 
50 
•012 
1-00 
50 
•058 
December ... 
97 
•072 
2-70 
35 
•048 
Means ...... 
110 
•068 
2*45 
34 
•028 
1868. 
January... ... 
132 
•064 
3*12 
53 
•031 
February ... 
198 
•069 
4-67 
23 
•009 
March ...... 
139 
•116 
5-61 * 
14 
•004 
April 
79 
•045 
8-66 
12 
•003 
May 
79 
•023 
3-87 
• 6 
•008 
June 
39 
•022 
3-73 
16 
•002 
July ......... 
82 
•013 
3-06 
48 
•001 
August ...... 
148 
•103 
5-43 
12 
*000 
September... 
104 
•060 
2-30 
33 
•001 
October 
89 
•105 
2-87 
50 
•055 
November ... 
91 
•054 
2-73 
54 
039 
December ... 
153 
•139 
4-00 
45 
•101 
Means 
111 
•067 
3-75 
30 
•021 
Averages oe the above Two Yeaes. 
January 
131 
•084 
2-93 
48 
•016 
February ... 
178 
•078 
4-03 
26 
•006 
March 
169 
•077 
4-59 
18 
•008 
April 
150 
•096 
4-63 
9 
•004 
May ......... 
107 
•032 
3*08 
18 
•012 
June 
63 
•029 
2-79 
28 
•004 
July 
77 
•065 
2-27 
46 
•052 
August 
89 
•070 
3-42 
19 
•007 
September... 
89 
•053 
2-13 
35 
•034 
October ...... 
77 
•091 
2-17 
46 
•055 
November ... 
70 
•033 
1-86 
52 
•048 
December ... 
125 
•105 
335 
40 
•078 
Means 
110 
•067 
3-10 
32 
•027 
.C it 
It will be observed from the first of these tables that the 
maximum of ozone development is coincident with the 
