
 
        
         
		c a u s e s   different  from  the  inhabitant  o f   the North  o f  Europe  ?  What  o c -   
 ° e t i e s   cafions  the  inhabitants  o f O-Taheitee  to  be  fo-much,diftinguiihed. 
 from  the Mallicolefe  ?  W e  have  hinted  before,  that  thefe  two  varieties  
 o f  men  in  the  South-S.eas,  are  defcended  from  two  diftindt.  
 races..  This  is  not  de'eifive,  and only  leads  us  further into  the  fame.,  
 difcufiions,  and  requires  us  to  ihew what, caufes have produced  thefe;  
 two  diftindt  races  or  varieties  o f men  ? 
 T h e   queftion  cannot  be  difeufled  unlefs  we  confider  the  fubjedt  
 under, various  heads.  T h e  differences  are  either, obferved.  in  the organic  
 part  o f man,  or  they  refpedt  his- mental  and  moral  faculties  ::  
 o f  the  laft we  fhall  treat  at  large  id  fubfequent  fedtion's;  at prefent.  
 we  intend  to  confine  ourfelves  to  the  corporeal  varieties,  confifting.  
 in,  i f f ,   colour;  2d,  fize;  3d,  form, and  habit;  and  4th,;peculiar  de—  
 fedt-s or excefles,  or modifications in  certain parts o f the human  body... 
 Fuji,  Th e   C o l o u r   o f  the human, body  depends  no  doubt  upon  
 thefe"three  great caufes  :  ill,: expofure to  the  air ;. 2d,  the  influence  
 of the  fun;  and  . 3d,  feme  particular  circumftances  in  the mode  o f   
 living.  From  the  bell  enquiries  fet On  foot  by  anatomifts,.  it  appears, 
   that  all  the  difference  of colour  lies  in  the  human Jkin,  and;,  
 efpecially in  the  outer  integument  called, the  cuticle,  which  again  is-  
 confidered  by  them  under  the  two denominations  o f  Epidermis  and.  
 Malpighis  reticular membrane.  In white people,  the  Epidermis is  a.  
 very  thin,  pellucid,  indurated  lamella,,  tranfmitting  the  colour  o f 
 the  reticular membrane immediately  lying  under  it,  which  is  a white  
 .or  colourlefs,  vifeous  or  ilimy  fubftance  :  whatever  colour  the  fub-  
 itance  has which  is  immediately  under  the  Epidermis,  that  colour  
 appears  and  becomes  vifible  to  the  eye.  Th e   blood  fuddenly  
 mounting  -into  the  blood  veftels  o f the -face,  tinges  the  fame with  a  
 vermillion  bluih.  Th e   blood  being  coloured  by  the  extravafated  
 bile, caufes  the  yellow  colour  o f  the jaundice.  •  Th e   yellow  lymph  
 -depofited  in  the  cutaneous  vafcula,  imparts  the  yellow  tint o f  thofe  
 who  in  the Weft:  Indies  are  afflifted with  the yellow .fiver.  The  
 ttattowing  of-the  O—Taheiteans,  and  gunpowder  accidentally  forced  
 into the  fkin,  forms  a black  or blueiih appearance.  And in negroes,  
 rhe  late  ingenious  ]Vlr.  Meckel  •*•  difeovered  the. reticulum  o f  hdal—  
 ■ pighi to  be black ;  but  the medullar fubftance of the  brain,  the  pineal  
 gland,  and  the  fpinal marrow,  together with  the  plexus nervi  
 ■ optici, he  found  grey and blackifli.  Others  -f-  have  found  the blood  
 •of negroes  to  be  deeper  coloured  than  that  o f white  people.  The  
 -ancients  J  knew  that  the  fpermatic  liquor  of  negroes  is  o f   a  dark  
 hue,  and  this  curious-obfervation  is  confirmed  by  m o d e r n s I n   a.  
 word',  we  find,  -that-  many  o f  the  fluids  in  negroes  are  tinged  
 ■ darker,  and  fuch  o f  their  folids  as  are  o f  a  tender  apd  delicate  
 L   l  a  texture, 
 »  TVIcokcl in  flic Mémoires  dc  l’Academie  de -Berlin,  1753-  “   ; 
 Towns  in  the Philos. -Trans.  on -the  blood \of  negroes,. 
 Herodotus Thalia, No.  ci. 
 .  -41  Le Cat Traité  fur la couleur vde la peau. 
 C AU SE S   
 OF  V A R I E 
 T IE S ,