---------------------+-----------+-----------+-----------+----------- Meridian used in the | Tobolsk. | Tobolsk. | Tobolsk. | Greenwich. original, | | | | +-----------+-----------+-----------+----------- Amount used for | +67°. | +67°. | +67°. | reduction, | | | | +-----------+-----------+-----------+----------- Source of the data, | Bering[16]| Campbell. | Du Halde. | Modern | MS. | [17] | | charts. +-----------+-----------+-----------+----------- Date, | 1730? | 1730? | 1736. | 1852-88. ---------------------+-----------+-----------+-----------+----------- | ° ' | ° ' | ° ' | ° ' +-----------+-----------+-----------+----------- Okhotsk | 58 54 | 59 13 | 58 54 | 59 20[18] | 141 30 | 143 07 | 141 20 | 142 40 +-----------+-----------+-----------+----------- Bolsheretsk, | 52 35 | 52 42 | 52 40 | 52 51 Kamchatka | 155 28 | 156 51 | 155 25 | 156 50 +-----------+-----------+-----------+----------- Upper Kamchatka | 54 10 | 54 48 | 54 10 | -- -- settlement | 157 10 | 158 00 | 157 15 | -- -- +-----------+-----------+-----------+----------- Lower Kamchatka | 55 46 | 56 11 | 55 50 | 56 15 settlement | 159 28 | 162 30[19]| 159 15 | 162 15 +-----------+-----------+-----------+----------- Cape, at Kamchatka | 55 52 | 56 03 | 55 40 | 56 00 river-mouth | 162 05 | 163 10[20]| 162 10 | 163 05 +-----------+-----------+-----------+----------- Cape Thaddeus | 61 50 | 62 20 | 62 00 | 62 15 (Navarin) | 176 05 | 178 32[21]| 176 00 | 179 02 +-----------+-----------+-----------+----------- West point, entrance | 65 16 | 65 35 | 65 15 | 65 28 Holy Cross Bay | 179 40 | 182 15[22]| 180 00[23]| 181 12 +-----------+-----------+-----------+----------- Mouth of river, Holy | 66 00 | -- -- | 65 50 | 66 22 Cross Bay | 179 40 | -- -- | 179 50 | 180 45 +-----------+-----------+-----------+----------- Transfiguration Bay | 64 45 | 65 01 | 64 40 | 64 45 (east entrance) | 185 15 | 187 30 | 185 10 | 185 15 +-----------+-----------+-----------+----------- Cape Chukotski, of | 63 55 | 64 25 | 64 02 | 64 14 Bering | 186 55 | 189 55[24]| 186 10 | 186 50