Note 131 — PART III. APPENDIX I. & II. CONTAINING SUPPLEMENTARY ACCOUNTS OF THE RUSSIAN DISCOVERIES, &c. &c.

Krassilnikoff compared his observations with corresponding ones taken at Petersburg, which gave results as follow:

From comparing an observation of an eclipse of the first satellite, taken at Ochotsk the 17th of January, 1743, with an observation of an eclipse of the same satellite taken at Petersburg on the 15th of January in the same year, the difference of longitude between Petersburg and Ochotsk appeared to be 7^h. 31´ 29´´; from a comparison of two other similar observations the difference of longitude was 7^h. 31´ 3´´, a mean of which is 7^h. 31´ 34´´, being the true difference between the meridians of Petersburg and Ochotsk according to these observations. By adding the difference of the longitude between Petersburg and Paris, which is 1^h. 52´ 25´´, we have the longitude of Ochotsk from Paris 9^h. 23´ 59´´, which differs 29´´ only from the result of Mons. Maraldi. Nov. Comm. Pet. III. p. 470. In the same manner the longitude of Bolcheresk appears from the corresponding observations taken at that place and at Petersburg to be 10h. 20´ 22´´ differing from Mr. Maraldi about 2´ 5´´. Nov. Com. p. 469.

But the longitude of the port of St. Peter and Paul, estimated in the same manner from corresponding observations, differs from the longitude as computed by Mons. Maraldi no more than 20 seconds, p. 469.