Chirikoff's observation of a lunar eclipse at Ilimsk made that point 30° 13' east longitude from Tobolsk or, approximately, 97° 13' east from Greenwich. His pedometric observations placed Ilimsk in 103° 44' E. Gr. On recent charts Ilimsk is in about 104° E. Gr., so that the eclipse observation was in error about 6½ degrees. The meridian used on the voyage of 1728 was that of Lower Kamchatka, based on pedometric observations from Ilimsk computed by means of a traverse table. These, according to Chirikoff's journal, gave for the Lower Kamchatka post a meridian of 126° 01' 49" east from St. Petersburg or about 156° 02' east from Greenwich, which is in error about six and a quarter degrees. Discarding the eclipse observation and using only the pedometric observations from Tobolsk to Lower Kamchatka the result for that place is 162° 33' E. Gr., which is very near the truth. I have no doubt that this result is what was finally used in the chart (though not in the original report) and, therefore, that all the observations of Lauridsen and others in regard to the alleged eclipse in Kamchatka are based on a misunderstanding and without value. ITINERARY FOR BERING'S FIRST EXPEDITION. _Dates corrected to ordinary calendar, beginning at midnight._ ------------------------------+-------------+------------+----------- | | Date. | Date. | Authorities.| Old Style. | New Style. ------------------------------+-------------+------------+----------- 1725. | | | Advance party under Chirikoff | | | left St. Petersburg | H. L. | Jan. 24. | Feb. 4. Bering followed | B. L. M. | Feb. 5. | Feb. 16. Bering arrived at Tobolsk | B. H. L. M. | March 16. | March 27. Bering left Tobolsk | Bering. | May 15. | May 27. Bering arrived at Ilimsk, | | | where they spent the winter | | | of 1725-6 | L. | Sept. 29. | Oct. 10. Lunar eclipse obs. at Ilimsk | Chirikoff. | Oct. 10. | | | | 1726. | | | Bering arrived at Yakutsk | L. | Mid. June. | End June. Bering left Yakutsk | L. | Aug. 16. | Aug. 27. Bering reached Okhotsk | L. | Sept. 30. | Oct. 11. Bering's provision train | | | arrived at Okhotsk | L. | End Oct. | Mid. Nov. | | | 1727. | | | Spanberg reached Okhotsk | | | (Jan. 6, L) | M. H. | Jan. 1. | Jan. 12. Vessel _Fortuna_ launched at | | |