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I made the Longitude by the Time Keeper of the different places according to its Portsmouth Rate as follows, but by a presumed Rate from my
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Lunar Observations I consider their true Situations to be 8′..24″ less. The Latitudes are good as already extablished.
The West part of the Entrance of Streights Le Maire | 64°..48′ West |
The East part of Do. Do. Do. | 64..31 |
The East part of the Eastermt of New Years Isles where Captn. Cook observed the Latd. to be 55°..40′So | 63..52 |
Cape St John or East part of Staten Land | 63..27 |
Cape St John according to my Observation is 8′..24″ — = | 63..18..36 |
The Following table shows the Quantity of Latd. and Longitude I have made every day more or less than what the Log gave me as explained on — 29th. Feby last the North, South, East and West being prefixed to it as was the direction of the Stream while I was on the Coast of South America.
Time When | Error in Latitude | Error in Longitude | Latitude at Noon | Time When | Error in Latitude | Error in Longitude | Latitude at Noon |
1788 February 14th | 0°..06′ So | 0°..01′ Et | 11°..59′ So | March 9th | 0°..36′ So | 0°..21′ Et | 38°..48′ So |
15 | 0..02 | 0..00 | 14..20 | 10 | } 0..12 | 40..14 | |
16 | 0..04 | 0..05 Wt | 16..40 | 11 | 0..17 | 39..54 | |
17 | 0..03 | 0..01 | 18..45 | 12 | 0..02 | 0..13 | 40..14 |
18 | 0..02 No | 0..02 Et | 20..44 | 13 | 0..04 | 0..01 W | 42..34 |
19 | 0..07 So | 0..11 | 22..33 | 14 | 0..12 No | 0..23 Et | 42..44 |
20 | 0..01 | 0..03 W | 23..51 | 15 | 0..08 | 0..10 W | 43..03 |
21 | 0..02 | 0..01 Et | 24..48 | 16 | } 0..04 | 43..34 | |
22 | 0..06 | 0..08 | 25..55 | 17 | 45..10 | ||
23 | 0..11 | 0..10 | 27..25 | 18 | 0..40 Et | 46..13 | |
24 | 0..07 | 0..06 | 27..52 | 19 | 0..11 | 0..23 | 47..59 |
25 | 0..04 No | 0..08 | 28..27 | 20 | 0..05 | 0..04 | 50..24 |
26 | 0..12 | 0..01 | 29..38 | 21 | 0..12 | 0..49 W | 51..23 |
27 | 0..01 So | 0..02 W | 30..56 | 22 | 0..19 So | 0..46 | 53..08 |
28 | 0..02 No | 0..10 Et | 31..06 | 23 | 0..08 | 0..39 | 54..28 |
29 | 0..05 So | 0..08 | 31..31 | ||||
April 1 [sic] | 0..00 | 0..11 W | 32..08 | ||||
2 | 0..08 | 0..07 Et | 32..59 | ||||
3 | 0..05 No | 0..01 | 33.55 | ||||
4 | 0..16 | 0..01 | 34..22 | ||||
5 | 0..11 So | 0..13 | 31..18 | ||||
6 | 0..01 | 0..11 W | 34..59 | ||||
7 | 0..09 | 0..20 | 35..06 | ||||
8 | 0..18 | 0.. 4 | 36..10 |