Review of Berings First Expedition, 1725-30. 167 
Note—The reception of the original work of Bergh while reading the 
proofs of these pages has enabled me to correct several errors of previous 
writers, but it was too late to incorporate here the additional material 
which Bergh’s work affords. This will enable me to add, in a future 
publication, some historical data which have never appeared in English 
and which are necessary to complete the record. I desire in this place 
to express my gratitude for and appreciation of the liberality of the 
authorities of that ancient seat of learning, the University of Upsala, 
as exhibited. in their willingness to send such a valuable document to a 
foreign student half around the world for purposes of historical research. 
SuPPLEMENTARY Notre spy Marcus BAKER. 
ON THE ALLEGED OBSERVATION OF A LUNAR 
ECLIPSE BY BERING IN 1728-9. 
Bering was in Eastern Siberia, Kamchatka and the adjacent 
waters in 1728 and 1729. Could he have observed a lunar eclipse 
there at that time ? 
According to the ephemeris of Manfred* published at Bonn in 
1725 there were two partial eclipses of the moon visible in Europe 
in 1728, and two total eclipses of the moon in 1729. 
In regard to these four eclipses the ephemeris furnishes the 
following data : 
| 1728, Feb. 24. | 1728, Aug. 19. | 1729, Feb. 13. | 1729, Aug. 8. 
Eclipse begins -_____- | 182 32m 4h O7m Th 45m 12h 02= 
Total immersion __--| -..  —- DP le 8 46 13 02 
Middle of eclipse__.__ 20 0 5 35 9 35 13 52 
Emersion begins._.-| -- -- ee aa 10 24 14 42 
Eclipse ends ___.__-- 21 29 7 03 11 925 15 42 
Digits eclipsed ...-_- QEmoler saan even. Nolo LOW T46 19 44S. 
BUMTISes se at Sic so aru aaNe Shoe tals A 
Sunsets 2. 22. 222 Itmeneeatie 6 49 ME Beant Sie 
CLUS AN ONO eet | Partial Partial Total Total. 
Sun’s declination __ —9° 38’ +12° 42’ | —13° 167 +16° 09’ 
‘* hourly motion -_. + 0.9 > — 0.8 | + 0.8 | — 0.7 
* Manfredius (Eustachius). Novissimae ephemerides motuum coeles- 
tium e Cassinianis tabulis ad meridianum Bononiae supputatae auc- 
toribus Eustachio Manfredio (etc.) Tomus 1. ex anno 1726 in annum 
1787 (etc.) 4° Bononiae, MDCCXXV. 
