lu GENERAL RESULTS OF THE MAKERSTOUN OBSERVATIONS. 
TABLE 48.—Diurnal Variations of the Vertical Component of Magnetic Force, as deduced from the 
Regular Daily Observations made during the Four Years 1843 to 1846. 
Mak. | 
Mean Jan. Feb. | March.| April. | May. | June. | July, | Aug. | Sept. Oct. Noy. Dec. 
Time. 
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(=e) 
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i | 
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ano 
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0 13 || 0139 | 0090 | 0227 | 0352 | 0178 | 0000 | 0076 | 0238 | 0372 | 0397 | 0176 | 0099 
1 13 || 0169 | 0111 | 0269 | 0368 | 0216 | 0015 | 0113 | 0297 | 0435 | 0423 | 0208 | 0126 
2 13 | 0203 | 0151 | 0358 | 0446 | 0286 | 0058 | 0169 | 0381 | 0529 | 0481 | 0242 | 0166 
3.13 || 0220 | 0216 | 0417 | 0532 | 0390 | 0126 | 0274 | 0471 | 0618 | 0560 | 0317 | 0231 
4 13 || 0221 | 0246 | 0464 | 0590 | 0448 | 0211 | 0365 | 0550 | 0656 | 0561 | 0363 | 0235 
5 13 || 0241 | 0258 | 0540 | 0696 | 0513 | 0243 | 0412 | 0596 | 0666 | 0536 | 0340 | 0249 
6 13 || 0241 | 0254 | 0518 | 0716 | 0522 | 0257 | 0402 | 0608 | 0544 | 0487 | 0428 | 0269 
7 13 || 0250 | 0220 | 0457 | 0654 | 0502 | 0247 | 0385 | 0537 | 0486 | 0440 | 0332 | 0253 
8 13 || 0244 | 0204 | 0383 | 0518 | 0432 | 0227 | 0319 | 0434 | 0380 | 0373 | 0242 | 0181 
9 13 | 0198 | 0139 | 0260 | 0396 | 0321 | 0176 | 0221 | 0259 | 0253 | 0308 | 0159 | 0162 
10 13 | 0063 | 0122 | 0093 | 0308 | 0244 | 0100 | 0161 | 0187 | 0177 | 0248 | 0077 | 0133 
11 13 | 0018 | 0023 | 0120 | 0224 | 0176 | 0055 | 0102 | 0041 | 0108 | 0172 | 0029 | 0086 
TABLE 49.—Diurnal Variations of the Vertical Component of Magnetic Force for Different Periods, 
deduced from Table 48. 
Six Months. 
Mak, Dec. March, May. July. Sept. ¥ Twelve 
ey or il. Sard cp feet mt Sept. |, March ||, Months, 
Feb Aug, 
h. m. |} 0-00 0-00 0-00 0-00 0-00 0-00 0-00 0-00 
12 13 || —0075 | —0270 | —0143 | —0196 | —0201 || —0138 | —0203 || —0171 
13 13 | —0075 | —0252 | —0177 | —0208 | —0222 || —0148 } —0212 || —0181 
14 13 —0101 | —0255 | —0177 | —0222 | —0214 | —0157 | —0218 || —0188 
15 13 || —0102 | —0211 | —0152 | —0194 | —0220 | —016] | —0186 || —0173 
16 13 —0099 | —0184 | -0094 | —0140 | —0213 || —0156 | —0139 || —0148 
ily fas} —0100 | —0141 | —0047 | —0103 | —0177 || —0138 | —0097 || —0118 
18 13 || —0087 | —0085 | +0011 | —0051 | —0123 || —0105 | —0042 | —0074 
19 13 || —0072 | —0027 | +0046 | —0002 | —0057 || —0064 | +0006 || —0030 
20 13 —0056 | +0027 | +0051 | +0024 | —0009 || —0032 | +0034 0000 
21 13 | — 0045 | +0034 | +0018 | +0022 | +0022 —O0011 | +0025 +0006 
22 13 —0035 | +0016 | —0033 | —0004 | +0025 —0005 | —0007 — 0007 
23 13 —0013 | —0001 | —0086 | —0061 | +0023 || +0005 | —0049 || —0022 
0 13 +0003 | —0011 | —0094 | —0065 | +0064 +0033 | —0057 —0012 
1 13 | +0029 | +0018 | —0068 | —0017 | +0104 || +0066 | —0022 || +0022 
213 | +0067 | +0102 | —0011 | +0053 | +0166 || +0116 | +0048 || +0082 
3 13 +0116 | +0174 | +0075 | +0150 | +0247 || +0181 | +0133 |) +0157 
4 13 +0128 | +0227 | +0146 | +0235 | +0276 || +0202 | +0203 | +0202 
5 13 +0143 | +0318 | +0195 | +0282 | +0263 | +0203 | +0265 || +0234 
6 13 +0149 | +0317 | +0206 | +0283 | +0235 | +0192 |} +0269 || +0230 
7 13 +0135 | +0255 | +0191 | +0239 | +0168 +0151 +0228 +0190 
8 13 +0104 | +0150 | +0146 | +0154 | +0081 | +0092 | +0150 | +0121 
9 13 | +0060 | +0028 | +0065 | +0018 | —O011 || +0024 | +0037 | +0031 
10 13 0000 | —0100 | —0011 —0048 | —0084 — 0042 | —0053 — 0048 
11 13 —0064 | —0128 | —0068 | —0151 —0148 —0106 | —O116 | —O111 
| | 
