Page:Scientific Memoirs, Vol. 2 (1841).djvu/72

With this view the mean values for every twelve months have in the first place been calculated. They are:

	8, a. m.	1, p. m.
1834—1835	18 37 12·5	18 45 27·0
1835—1836	33 42·0	43 44·8
1836—1837	27 20·3	40 14·6

These mean values correspond to the middle day of each year of observation, i. e. to the 1st of October 1834; and so forth.

The comparison of the separate months of each year with the corresponding mean value, gives the following differences:

Declination, 8, a.m.

	First Year.	Second Year.	Third Year.	Mean.
April	− 1 5·9	− 0 44·3	− 0 47·4	− 0 52·5
May	− 0 44·6	− 1 28·6	+ 0 40·5	− 0 30·9
June	+ 0 27·9	− 0 45·6	+ 0 14·8	− 0 1·0
July	+ 0 44·7	+ 0 26·0	− 0 26·1	+ 0 14·9
August	+ 1 35·3	+ 0 30·4	− 1 37·9	+ 0 9·3
September	− 0 14·4	− 0 20·8	− 1 5·7	− 0 33·6
October	+ 0 5·6	− 0 19·0	+ 0 13·7	−0 0·1
November	+ 0 25·6	+ 2 33·3	+ 2 0·7	+ 1 39·9
December	+ 0 42·0	+ 1 43·9	+1 53·4	+ 1 26·4
January	+ 0 38·7	+ 1 20·4	+ 0 15·0	0 44·7
February	− 0 9·3	−0 15·3	+ 0 15·3	− 0 3·1
March	− 2 25·3	− 2 40·6	− 1 36·1	− 2 14·0

Declination, 1, p. m.

	First Year.	Second Year.	Third Year.	Mean.
April	+ 1 36·8	+ 2 46·8	+ 3 28·0	+ 2 37·2
May	+ 1 48·4	+ 1 32·3	+ 4 22·6	+ 2 34·4
June	+ 2 32·5	+ 0 56·5	+ 2 37·8	+ 2 2·3
July	+ 2 52·0	+ 0 58·0	+ 2 11·4	+ 2 0·5
August	+ 3 44·0	+ 3 12·0	+ 1 30·4	+ 2 48·8
September	+ 1 5·3	+ 0 42·8	+ 0 45·0	+ 0 51·0
October	− 0 39·8	− 0 39·5	+ 0 18·2	− 0 20·4
November	− 2 22·7	+ 0 4·7	− 3 20·3	− 1 52·8
December	− 3 54·3	− 3 25·7	− 4 27·8	− 3 55·9
January	− 3 12·6	− 3 10·2	− 2 28·4	− 2 57·1
February	− 2 57·6	− 2 29·6	− 3 46·3	− 3 4·3
March	− 0 31·8	− 0 28·4	− 1 10·4	− 0 43·5

The numbers in the last column, being mean values deduced from three years' observations, are freed in some degree, though