

Anemonal Curves during Nov. Dec. and Jan. 1836-37. 213 



relation to the dotted line. It will be observed that, during 

 the first five or six days, the curves are below the dotted line : 

 they are afterwards above, until they arrive at the central 

 point ; and they continue above during the same number of 

 days while describing the remaining portions, being found 

 below at the close as at the commencement. This is more 

 conspicuous in the December curve than the preceding. 



The curve described during January exhibits a very dif- 

 ferent character to either of the preceding. The east point 

 is still zero ; but the first half is below, and the second above, 

 a dotted line coincident therewith. The variations exhibited 

 by this curve are much greater than those that occurred 

 during the preceding periods. During January, they extended 

 to seven points on each side east; while in November and 

 December they were confined to seven points only ; those 

 between north-east and south-east including the north-west 

 and south-west points. There are some interesting features 

 in the curves of December and January, that claim attention. 

 The descent to the south-east point in December forms an 

 acute angle; and three days afterwards a similar angle is 

 noticed, the apex being in the opposite direction, and situated 

 in nearly the opposite point. Similar complementary angles 

 are also conspicuous in the January curve, a couple occurring 

 about six or eight days after the commencement, and another 

 pair, in the opposite part, a few days before the close. It may 

 be remarked, that the pairs of angles occur about the same 

 points of the compass. 



It may naturally be enquired, of what character were the 

 anemonal movements in the intervals between the curves ? 

 There are some very interesting points connected with the 

 curves described during these intervals that merit attention. 

 The period just before the commencement of the November 

 curve was characterised by a considerable depression of 

 temperature ; the interval between November and December 

 was of an opposite character, being marked by an elevation 

 of temperature, and a depression of the barometer, and ac- 

 companied by gales, particularly the tremendous one of Nov. 

 29. The interval between December and January exhibited 

 a return to cold. We have, consequently, opposite characters 

 alternately exhibited during these intervals. Fig. 20. 2. shows 

 the curve described between the November and December 

 curves; and Jig. 20. 4. that which occurred between those de- 

 scribed in December and January. This is so placed in the 

 diagram as to show that a well-marked curve was described 

 from Dec. 12. to Jan. 11., both portions being, to a certain 



