372 
ME. EViJN'S OX THE DE^HATIOX OF THE COIMPASS 
Table III. — Screw Steam-vessels, Her Majesty’s Xavy (ATood-built). 
Date. 
Place of observation. 
Ship’s name and Tonnage. 
Permanent coefficients. 
Coefficient 
B. 
Ship's , 
force to ; 
Heftd. < 
Earth's j 
homomai 
f<MW ' 
A. 
D. 
E. 
April 29, 1859. 
Portsmouth 
Mersey, 
3739 
+6 52 
-6 15 
0 
— 0 5 
-f 7 44 
0-1346 
Jan. 
5, 1860. 
Sheemess 
Ariadne, 
3202 
+0 8 
+0 31 
-0 12 
“j" 8 3/ 
0-1498 
Mar. 
29, 1859. 
Plymouth 
Doris, 
2479 
+ 1 11 
-0 30 
-fO 43 
+ 7 11 
0-125ti 
Jan. 
7, 1856. 
Plymont;}! 
Sanspareil, 
2334 . 
+0 4 
+0 58 
—0 13 
-r23 43 
0-4022 
May 
22 , 1857 . 
Cape of Good Hope 
-0 37 
-j-i 16 
-fo 36 
-f 3 41 
0-0642 
1857 . 
Canton 
-fo 8 
+° 53 
-0 7 
+ 7 41 
C- 135 - 
Oct. 
20, 1859. 
Portsmouth 
Arrogant, 
1872 
-0 32 
+0 20 
-fO 10 
-f 6 21 
O-II1J6 
Sept. 
5, 1859. 
Sheerness 
Clio, 
1470 
-0 43 
-f 0 56 
-fO 4 
-f 9 39 
0-1676 
June 
1, 1859. 
Sheemess 
Cadmus, 
1462 
-0 23 
-0 20 
-0 4 
+11 1 
0-1911 
June 
7, 1856. 
Portsmouth 
Pylades, 
1278 . 
-fl 22 
-fO 27 
-1 6 
-fl2 48 
0-2215 
Sept. 
9, 1856. 
Sydney, C. Breton Island 
— 0 6 
0 0 
— 0 12 
+ 17 47 
0-3054 
Sept. 
26, 1856. 
Portsmouth 
Highflyer, 
1161. . . 
-j-O 52 
-j-0 36 
-fO 13 
-fll 42 
0 ' 2 o 2 S 
Dec. 
12, 1856. 
Bio de Janeiro 
+0 7 
“f“ A AO 
c-cS^o 
Feb. 
1857. 
Cape of Good Hope 
— 0 50 
-0 23 
—0 8 
+ 4 20 
0-0755 
May 
26, 1857. 
Hong Kong 
+0 7 
-0 32 
-fo 10 
+ 3 21 
0-0 5 84 
Dec. 
2, 1857. 
Canton River 
+0 15 
+0 6 
-fo 10 
+ 3 45 
0-0654 
May 
17, 1858. 
Shanghae 
3 . 
-0 5 
-fo 39 
+ 6 25 
o-iiiS 
May 
23, 1859. 
Portsmouth 
Falcon, 
992 
-fO 15 
-fO 10 
-0 25 
+ 6 37 
0-1152 
1859. 
Plymouth 
Encounter, 
953 
+0 29 
+0 27 
-0 3 
+ / 1 
01-222 
Nov. 
28, 1859. 
Glreenluthe 
Mutine, 
875 
+0 12 
-0 19 
-0 10 
-f 8 35 
0-1492 
Nov. 
19, 1859. 
Sheerness 
Fawn, 
748 
+0 16 
-fO 42 
-0 40 
+ 7 21 
01279 
May 
21 , 1857. 
Plymouth 
Cordelia, 
579 
-fO 19 
—0 40 
0-1383 
Aug. 
8, 1857. 
Cape of Good Hope 
-f I 1 
Sept. 
20, 1858. 
Apia, Upolu, Pacific Ocean 
— 0 27 
+0 40 
-f I 1C 
+ 1 14 
0*0244 
Mar. 
7, 1857. 
Portsmouth 
Plu.mper, 
490 
-)-0 14 
4-0 52 
-f 0 
- 1-6 1 
DlOlS 
April 
1857. 
Lisbon 
+0 4 
— 0 10 
— 0 iS 
+4 39 
o-oSir 
May 
1857 . 
Bio dc Janeiro 
-0 49 
+0 47 
-fo 14 
+ 2 s 
0*0372 i 
Sept. 
I, 1857. 
Valparaiso 
+0 6 
-fo 37 
-fo 37 
+ I 6 
0*0192 
Oct. 
1857 . 
Sandwich Islands 
-0 49 
-fo 26 
+° 5 
+ 2 17 
0-039S 
Jan. 
30, 1858. 
VancoxKcr I., Esquimalt 
-0 13 
-fo 23 
-0 3 
+ 5 45 
O' 1001 
June 
17 , 1859 . 
Vancouver /., Kanaimo 
-fo 52 
+0 5 
+0 5 
-f 6 26 
O'l 120 
Jan. 
1, 1856. 
Greenhithe 
Tickler (Gun-boat), 232 
-1 37 
-fl 26 
-0 13 
( 
+ 0 15 
1 
0 0043 
