; r:  YVijAa  /raa^AxajA  y*  pvv*  ^isuioaoaszA  t z?:xfca  .389.  <J.  , 
i)  InnJ 
XTX'.  $hrna?of  BMJtnet  Abercrombie^  in  the  Year  1775. 
Henry  Cavendilh,  F.  R.  .9. 
m* 11 
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! p <*  “ d)  fWcsd  out  io  - Read-J^  27/177$ 
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oJ  vJ  asndq  i>x  p tfiA^rfafliarll  taiSirjbQiq  lg-#fcE9fft  §0  sttsq  Hr  s i p :cz:  (£* 
riarlw  3bsxn  ofo  .ifjib&l  odi  0$  qib  oxfo  la  oriftoo  Mb  <•  b k 1o 
I J i toqqr jj  aixiJ  dtiv/  flguons  ite//  o%|Sff  <s&[f£  ;n  bsanBfb.o'ipv#,  ^nlcKr^dJ 
-1-  2d*  The  of  the  thermometer,  accord  m2;  to  Fahrenheit  s icale.  This  * 
nm  . 7 t£inOVIHJnj  DOJIIIOq  5 - » .n.  t»l.  y * • '.it  , i • ••  • ; 
therm  eter  belonged^  Mr.  kbssell,  and  bung.  in  the  open  atr  in.  the  balcony. 
3d,  including  four  columns,  contains  the  rentier  or  the  marine  barometer s,  all  of 
which,  as  well  as  the  thermometer^,  wer^thatfe  toy  nairn e and  blunt:  thofe  marked 
II  . _ . _ lit  tK  J X 1 . . 1 X A I Lilli.  l/f  *lx  A*  1.  xi-T  /t'  1 XT  txx  . > xl  .X  hr'lxr.*  JxtA  n nix  X\  xl  C TO  . K XT  , X .T  X 
£v  Alexander  Dalrymple,  Efq.  F . /?. 
ftJ  moil  V.-Vidh  •/,’  boouJjjl  a v. 
.[  ] ni  ftiv,  babul 
WllIL/llj  dO  WUi  ao  uiuiuiuuiwiwiqj  v,a  ^ uicw^  j cxxiw  x>  Xj  u 1^1  a • iaav/xu  iaiui  avu  .£■*. 
R and  0 ire  qiiickilW^f*,  <5rf[the  kind' ufiially  made  by^frefiiV  ThatAi'arkkl  Sis  doth  funded  >/ 
of  qUickfllvCr,  and  of  a‘  lighter  fluid,  for  the  ptirpofe-of  making  the -alterations -more  • v 
vifible,  which  is  a very  great  convenience  at  fea;3a)quickfilver  thermometer  being  fiked  to 
it  Jftbr{tbe  fake  of1  cocreding-  itsi  height,  ;theihfeatr;bhi which., is  if§tu*l9fflp*4rftd&e column  «> 
marked  Th.  next  to  that  marked  S.;  . noi 
4th,  The  weather  and  winds  in  four  lines;  ift  line  from  noon  to  6 p,m.;  2d,  from 
6 p.m.  to  midnight;  3d,  from  midnight  to  6 a.m.  ; 4th,  from  6 a.m.  to  noon.  l:t 
In  the  column  of  weather , f.  denotes  fair ; fq .fqually,  c.  cloudy ; h.i  hazy,  r.  rain ; hr.  yL 
\ hard  rain ; fr  ./mall  rains,  dr.  r.  drizliyg  rain ; Hx^/howers ; th.  thunder  \ 1).  lightning. 
It  is  proper  to  remark,  that'  tile  winds  are  let  down  according  to  the  compafs , without  any 
allowance  for  the  Variation.  ‘ W) 
5 th  in  2,  The  difference  between  the  daily  alteration  of  latitude  by  account  and  obfer - W 
nation ; N.  denoting  that  the  obfervation  was  to  the  Northward  of  the!  accounts  S.  that  it 
was  to  the  Southward <b).  s 
(a)  Here,  for  wail t of  room,  the  <)ay  of  the  month  only  is  expreffed ; biit  ih  .the- original  journal  tlie  ^ays  of- the  week,  and 
of  theMoqn,  arealfoTinf?rt«l.J;ii  < JU'-sn  jMrtLi  srl  iH’//  I^AiiiVo  1-  ’fl  mefii  v-  rtrrh 
(b)  Next  to  thefe  columns  in  the  original  journal  are'  the  folloWing,'  whicn  ire  left  out  here  only  'fof  want  of  room : ’ 1 jC 
Coweft  cdtirfe,  lee  way  variation  &ic.  allowed^  and  the  differeafooufift * raduecsd  ftlonetAraig^Ucourfe,  Iff 
Diftan*  e on  that  ftraight  courfe.  ’ 
Difference  of  latitude  by  account, 
Difference  of  latitude  by  obfervation, 
The  departure. 
The  difference  of  longitude  by  account, 
The  difference  of  longitude  by  the  time-keeper. 
ill  ad)  lo  .rfiow-noi 
> in  minutes  of  a degree. 
ijuaufl 
. 6t^.>%,2V)7fhe  .difference  be^en  the  d^ily.  alteration  of  longitude  by  the  account  and 
time-keeper  \r Wv  denqtiqg  that  the  iongitude  b.y  the  time-keeper  was  to  the  IVeJlward  of 
account ; E.  that  it  was  to  th e-  Eaffward.  • 
. The  refult  of  thofe  differences  indicates  the  daily  effect  of  current;  however  an, 
error -in  the  courfe  failed,  or  diftance  run  by  log,  would  make  the  current  appear  different 
fj^opr^what  it  really  w;as. 
7th,  The  longitude  from  Greenwich,  in  feven  columns. 
iff,  The  longitude  by  account. 
2d,  The  longitude  by  the  time-keeper , which  was  made  by  Arnold,  but  without 
his'  late  improvements.  . ' f , : , 
3d,  The  difference  between  the  longitudes  deduced  from  obfervations  of  the  Moon 
and  from  the  time-keeper  uncorreBed\  e.  denoting  the  time-keeper  to  be  to  the 
Eaft  of  <t  ; w.  denoting  time-keeper  to  Weft  of  <t  . This,  admitting  the  time- 
keeper not  to  be  liable  to  any  fudden  changes  in  its  rate  of  going,  indicates  the 
precilion  with  which  the  obfervations  of  the  Moon  may  be  relied  on,  all  circum- 
ftances  of  weather  and  of  the  fhip’s  motion  confidered. 
4th,  The  longitude  by  obfervations  of  the  Moon's  difiance  from  the  Sun  or  Starst 
adjufted,  by  the  log,  to  the  noon  neareft  the  time  of  obfervation. 
3th,  ^fhe  number  of  fights  ordinances  obfer.yyd. 
6th,  The  objedl  whofe  diftance  from  the  Moon  was  obferved ; o denoting  the  Sun; 
* the  Star;  S.  Spica  Yirginis;  R.  Regulus;  A.  Aldebaran;  At.  Atair;  P.  Pollux; 
F.  Fomalhaut;  An.  Antares-. 
7th,  -Xhe  extre{miedifferencebG.x.\vcen.  the  highefi  anCt.loweft  obfr nation ; expreffed  in 
minutes  of  a -degree  ; when  the  feconds  zmo\mt  to  more  than  30,  the  next  minute 
tf^w  is  takep,  otberwife  the  next  minute  below. 
8th,  The  latitude  in,  two  columns : 
1 ft,  The  latitude  by  account,  carried  on  from  the  land,  in  the  fame  manner  as  the 
longitude  by  account . 
#Ddd  a 
