612 LAMONT: MAGNETIC RESULTS. 
TaBLe VI. 
Monthly Means of the Declination deduced from two-hourly 
observations. 
1840. 1841. 1842. 
January seseseceee Pace =| 16 57-60 | 16 50-18 
BED EMAL 6 snj50:5.10002) ebiea ems 56°98 49°84 
March i.s:sscccceke” Noeeees 56°86 49°81 
re ee re 5582 48:95 
May.) stevessceeeanedl lees 54:77 48°61 
dune’ ”< devas costenccaee teareer 53°51 48°24 
Julyic. dese. cistercad|ien leetess 53°35 47°42 
ANUS USCH snwasfae dens 16 60°39 53:00 46:49 
September ......... 59°61 51:73 45°38 
October. : 0.3: 002 58°76 50°69 45°48 
November ......... 58°46 51:39 44:53 
December ......... 57°52 50°61 43°68 
Tasue, VII. 
Monthly Means of the Horizontal Intensity in absolute mea- 
sure, deduced from the two-hourly observations. 
1841, November...| 1-9295  |l1e49. Jute .e.ccss. 1-9304 
December...| 1:9305 JULy oasreaen 1:9307 
1842. January ...| 1-9304 August ...... 1-9297 
February ...| 1:9309 | September...| 1:9316 
March ...... 1:9318 October ...| 19318 
Aiprilid. 3 iecs5 19311 | November...| 1:9338 
May, ioc: --| (1:9346)_ || December...| 1-9856 
[The subjoined extracts are from Dr. Lamont’s Annalen fiir 
Meteoroloyie und Erdmagnetismus, Jahrgang 1842, Heft. iv.— 
EK. 8.] 
1. Remarks on Dr. Lloyd’s Induction-inclinometer. 
A paper by Professor Lloyd has been referred to, in which he 
proposes to determine the absolute inclination and its variations 
by means of the magnetism induced in soft iron bars. The 
idea is so simple, and the experiments given by Professor Lloyd 
speak so advantageously for the applicability of iron bars, that I 
immediately began to construct an instrument on this principle. 
In doing so I did not employ with Professor Lloyd a vertical iron- 
bar east or west of the freely-suspended magnet, but I made use 
