8 MAJOE-GENEEAL SABINE ON THE DECENNTAB jyiAGN’ETIC ENEQrALITT. 
In both classes of solar variations the years 1841, 1846, 1847 and 1848 are the years 
of greatest range, and the years 1842, 1843, 1844 and 1845 those of least range. If 
we unite in one curve the lunar results in the four first-named years, and in a second 
curve the results in the four last-named years, and compare these two curves, we are so 
far from finding in the lunar variation an inequality corresponding to that in the solar 
variation, that the difference between the curves, such as it is, is in fact in the opposite 
direction. These curves are drawn in Plate I. fig. 3, and are there shown in comparison 
with a thhd curve, which is that of the mean lunar-diumal variation in the entire period 
of eight years. 
The Tables 1. to IV. were prepared, under Mr. ]\Iageath’s superintendence, by the 
Norr-Commissioned Officers of the Poyal Artiller’y employed in my office, each entry 
havirrg been verified by two independent computers. The obserwations themselves are 
printed in the first three volumes of the ‘ Hobarton Obserwations.’ 
