22 



Results of Makerstoun Obseevations, 1845. 



TABLE XXXIX. — Mean Variations of the Vertical Component of Magnetic Force, with reference to 

 the Moon's Hour-Angle, for each Lunation, for the Six Summer and Seven "Winter Lunations, 

 and for the whole Thirteen Lunations of 1845. 



Moon's 

 Hour- 

 Angle. 



Lunations. 



1st. 



2d. 



3d. 



4th. 



5th. 



6th. 



7th. 



8th. 



9th. 



10th. 



11th. 



12th. 



13th. 



0-00 



Sani- 

 mer. 



Win- 

 ter. 



0-00 



Yeir. 



<I-O0 





000 



0-00 



00 



0-00 



0-no 



0-00 



(100 



O-OH 



0-00 



DUO 



O-iO 



0-00 



0-00 







0168 



0051 



0128 



0198 



0189 



0032 



0078 



0017 



0218 



0048 



0097 



0160 



0048 



0046 



0055 



0041 



1 



0172 



0052 



0077 



0181 



0213 



0036 



0100 



0054 



0218 



0101 



0097 



0212 



0057 



0058 



0065 



0052 



2 



0176 



0039 



0064 



0117 



0208 



0043 



0094 



0058 



0248 



0162 



0103 



0203 



0051 



0052 



0069 



0051 



3 



0140 



0014 



0028 



0161 



0202 



0068 



0094 



0055 



0209 



0173 



0070 



0177 



0047 



0056 



0048 



0041 



4 



0079 



0019 



0005 



0162 



0164 



0097 



0093 



0061 



0198 



0109 



0067 



0072 



0048 



0054 



0012 



0021 



5 



0014 



0017 



0000 



0163 



0166 



0105 



0081 



0060 



0180 



0129 



0042 



0071 



0042 



0050 



0000 



0013 



6 



0040 



0065 



0012 



0176 



0135 



0107 



0085 



0085 



0139 



0178 



0034 



0048 



0036 



0046 



0014 



0019 



7 



0086 



0055 



0042 



0099 



0161 



0114 



0066 



0105 



0122 



0177 



0030 



0044 



0013 



0036 



0019 



0017 



8 



0091 



0026 



0076 



0060 



0217 



0096 



0066 



0091 



0101 



0177 



0036 



0031 



0018 



0030 



0020 



0014 



9 



0000 



0023 



0126 



0000 



0226 



0099 



0066 



0061 



0068 



0157 



0056 



0000 



0017 



0011 



0009 



0000 



10 



0017 



0043 



0152 



0148 



0243 



0095 



0041 



0048 



0090 



0243 



0073 



0020 



0020 



0035 



0008 



0026 



11 



10146 



0058 



0175 



0228 



0245 



0078 



0046 



0036 



0069 



0197 



0095 



0016 



0036 



0041 



0058 



0040 



12 



0144 



0078 



0255 



0271 



0239 



0091 



0050 



0027 



0000 



0166 



0092 



0075 



0034 



0037 



0076 



0048 



13 



0179 



0097 



0233 



0293 



0250 



0100 



0049 



0073 



0053 



0121 



0075 



0085 



0049 



0061 



0075 



0058 



14 



0215 



0129 



0236 



0290 



0262 



0086 



0033 



0078 



0060 



0120 



0073 



0071 



0052 



0059 



0083 



0062 



15 



0200 



0131 



0245 



0320 



0252 



0086 



0033 



0078 



0042 



0129 



0084 



0061 



0045 



0060 



0083 



0062 



16 



0187 



0114 



0269 



0298 



0248 



0081 



0038 



0056 



0032 



0122 



0084 



0085 



0044 



0050 



0084 



0058 



17 



0182 



0096 



0268 



0212 



0211 



0079 



0029 



0057 



0046 



0131 



0089 



0080 



0024 



0030 



0079 



0047 



18 



0209 



0075 



0244 



0226 



0146 



0081 



0027 



0050 



0062 



0147 



0084 



0078 



0029 



0020 



0079 



0041 



19 



0178 



0056 



0219 



0240 



0118 



0050 



0005 



0058 



0089 



0114 



0057 



0060 



0011 



0018 



0054 



0027 



20 



0157 



0030 



0229 



0233 



0000 



0047 



0000 



0051 



0122 



0093 



0044 



0031 



0008 



0000 



0040 



0011 



21 



0180 



0035 



0167 



0242 



0092 



0046 



0015 



0040 



0151 



0064 



0000 



0025 



0000 



0022 



0022 



0012 



22 



0221 



0004 



0176 



0294 



0185 



0018 



0041 



0017 



0156 



0054 



0010 



0040 



0005 



0043 



0028 



0025 



23 



0172 



0000 



0126 



0254 



0188 



0000 



0049 



0000 



0176 



0017 



0036 



0037 



0010 



0036 



0012 



0013 



24 



0162 



0041 



0057 



0225 



0126 



0012 



0069 



0021 



0203 0000 0079 



0114 



0016 



0034 



0022 



0017 



TABLE XL. — Differences between the Hourly Means of the Balance Micrometer Readings for the whole 

 Series in each Month, and those for the selected Days ; or Table XXXV. minus Table XXXVIII 



Mak. 

 M. T. 



.Jan. 



Feb. 



iMaroh. 



April. 



May. 



June. 



.July. 



Aug. 



Sept. 



Oct. 



Nov. 



Dec. 



Year. 



h. 



M!c. Div. 



Mic. DiT. 



Mic. Div. 



Mic. Div. 



Mic. Div. 



Mic. Div. 



Mic. Div. 



Mic. Div. 



Mic. Div. 



Mic. Div. 



Mic. Div. 



Mic. Div. 



Mic. Div. 



12 



-10-0 



-12-6 



-12-9 



-25-5 



- 6-4 



-1-5 



- 



4-3 



-10-9 



- 80 



-4-2 



-1-7 



- 2-9 



- 8-4 



13 



-IM 



-11-9 



-19-2 



-19-8 



-160 



-1-5 



- 



5-5 



-10-9 



-18-4 



-7-3 



-2-3 



- 6-2 



-10-9 



14 



-18-3 



-10-4 



-21-6 



-24-8 



-17-5 



-2-0 



- 



9-2 



-11-5 



-18-3 



-8-8 



-4-6 



- 4-9 



-12-7 



15 



-11-8 



- 9-1 



-24-7 



-12-1 



-22-2 



-2-8 



- 



10-7 



-14-2 



-19-4 



-7-1 



-3-9 



- 6-6 



-120 



16 



- 7-9 



- 8-8 



-16-4 



-14-1 



-11-5 



-3-0 



- 



10-8 



-11-6 



-17-1 



-5-0 



-2-4 



- 4-3 



- 9-4 



17 



- 4-7 



- 9-0 



-11-0 



- 5-6 



- 5-7 



-3-2 



- 



10-5 



- 7-9 



-14-2 



-3-2 



-2-0 



- 3-9 



- 6-7 



18 



- 3-4 



- 80 



- 50 



+ 0-6 



- 11 



-3-3 



- 



7-5 



- 4-5 



- 9-8 



-0-9 



-1-9 



- 4-7 



- 4-1 



19 



- 3-2 



- 6-6 



- 2-4 



- 0-5 



- 0-4 



-2-6 



- 



30 



- 3-8 



- 7-5 



+ 0-4 



-1-6 



- 4-7 



- 30 



20 



- 3-8 



- 51 



- 01 



- 10 



+ 0-1 



-31 



- 



0-3 



- 10 



- 6-4 



+ 2-5 



-1-9 



- 4-5 



- 2-0 



21 



i- 31 



- 2-2 



+ 0-5 



- 0-5 



- 1-3 



-2-4 



+ 



0-7 



- 2-3 



- 4-2 



+ 1-9 



-1-5 



- 4-7 



- 1-6 



22 



;- 1-7 



- 1-7 



+ 1-7 



- 0-5 



- 0-3 



-1-5 



+ 



0-8 



+ 0-5 



- 1-0 



+ 0-7 



-2-7 



- 3-8 



- 0-8 



23 



'+ 1-0 



- 0-7 



+ 1-6 



+ 1-5 



+ 0-9 



-1-4 



+ 



2-6 



+ 2-6 



+ 0-8 



+ 1-8 



-2-4 



- 3-5 



+ 0-4 







-f 1-6 



+ 1.0 



+ 1-8 



+ 3-5 



+ 4-0 



-2-1 



+ 



3-6 



+ 2-6 



+ 6-4 



+ 4-3 



-2-3 



- 2-6 



+ 1-8 



1 



-h 2-5 



+ 4-7 



+ 3-4 



+ 50 



+ 4-4 



-1-6 



+ 



5-7 



+ 4-7 



+ 10-9 



+ 4-8 



-1-7 



- 1-3 



+ 3-4 



2 



-1- 5-6 



+ 7-5 



+ 6-4 



+ 6-4 



+ 3-6 



-11 



+ 



6-1 



+ 7-7 



+ 12-3 



+ 5-2 



+ 0-2 



+ 0-2 



+ 5-0 



3 



+ 100 



+ 12-6 



+ 8-3 



+ 10-5 



+ 6-2 



+ 1-7 



+ 



5-4 



+ 9-3 



+ 13-2 



+ 2-9 



+ 3-5 



+ 71 



+ 7-6 



4 



+ 111 



+ 12-8 



+ 14-1 



+ 11-6 



+ 7-3 



+ 4-8 



+ 



5-9 



+ 11-4 



+ 161 



+ 2-3 



+ 60 



+ 9-1 



+ 9-3 



5 



+ 150 



+ 17-2 



+ 27-1 



+ 14-4 i+ 10-9 



+ 7-0 



+ 



6-3 



+ 13-7 



+ 24-4 



+ 0-6 



+ 7-5 



+ 14-1 



+ 131 



6 



+ 15-1 



+ 14-8 



+ 25-2 



+ 16-6i+ll-2 



+ 6-6 



+ 



6-0 



+ 15-6 



+ 15-5 



+ 0-3 



+ 90 



+ 14-6 



+ 12-5 



7 



+ 16-6 



+ 9-8 



+ 17-7 



+ 13-7 + 9-3 



+ 5-9 



+ 



6-8 



+ 131 



+ 151 



+ 0-7 



+ 7-0 



+ 12-3 



+ 10-7 



8 



+ 15-3 



+ 7-2 



+ 10-4 



+ 9-8 



+ 8-0 



+ 4-8 



+ 



5-6 



+ 10-2 



+ 10-5 



+ 2-0 



+ 4-6 



+ 1-9 



+ 7-5 



9 



+ 5-8 



+ 1-2 



+ 4-3 



+ 6-5 



+ 6-6 



+ 3-1 



+ 



3-2 



- M 



+ 3-3 



+ 4-6 



+ 1-4 



+ 2-6 



+ 3-4 



10 



- 9-2 



+ 0-5 



- 3-8 



+ 2-8 



+ 6-1 



+ 10 



+ 



20 



- 0-2 



- 0-8 



+ 4-1 , 



-1-9 



- 0-3 



00 



11 



-13-6 



- 4-4 



- 50 



+ 0-3 



+ 4-3 



-0-9 + 



2-3 



- 9-9 



- 2-1 



-3-1 ! 



-3-9 - 1-3 



- 31 



I 



