ON  HAIR  AND  HORNY  SUBSTANCES. 
149 
the  stomach  of  certain  ruminating  animals.  Such  masses  some- 
times exist  in  the  ovaries  of  woman  ;  it  was  on  hair  of  this  kind 
that  M.  Von  Bibra  operated  ;  these  hairs  have  also  been  found 
between  the  muscles  of  the  thigh  of  an  ox.  These  hairs  contain 
one  per  cent,  of  sulphur,  much  less  than  the  hair  of  the  ox  con- 
tains. 
The  furs  of  various  animals,  contain  in  general  less  sulphur 
than  human  hair ;  the  author  arrives  at  this  conclusion,  in  con- 
sequence of  a  great  number  of  experiments  on  the  hair  of  the 
most  various  mammifera ;  sheep's  wool  contains  the  least,  0*81 
per  cent.  ;  chamois  hair  contains  the  most,  5-10  per  cent. 
Sulphur  of  the  Horny  Substance. 
Sulphur  per  cent. 
Ox  horn  ..... 
3-00 
Antelope's  horn 
117 
1-30 
Sheep's  horn  .... 
1-72 
1-75 
Chamois  horn  .... 
3-20 
3-21 
Rhinoceros'  horn 
3-09 
3-20 
Hare's  hoof  .... 
2-90 
291 
Roebuck's  hoof  .... 
3-02 
Chamois  hoof  .... 
1-50 
1-42 
Sheep's  hoof  ..... 
Ox's  hoof  .... 
112 
1-28 
1-51 
1-37 
Elk's  hoof  .... 
0-86 
0-88 
Calves  hoof  .... 
1-51 
1-71 
Dog's  nail  .... 
2-80 
2-69 
Fox's  nail  .... 
2-73 
2-81 
Bear's  nail  .... 
1-25 
1-48 
Man's  nail  .... 
2-71 
2-74 
Nail  of  hypertrophy  . 
2-05 
219 
Whalebone  .... 
3-44 
3.54 
Skin  cast  off  from  the  viper 
.       .  0-88 
Fat  and  Inorganic  Principles, 
Hair  and  fur  contain  fat  and  mineral  substances  in  variable 
proportions.  Age  and  color  appear  to  have  no  influence  in  this 
case.  It  is  not  the  same  with  them  as  with  feathers,  which,  ac- 
cording to  M.  Gorup-Besanez,  contain  so  much  the  more  inor- 
ganic matters,  and  especially  of  silica,  as  the  bird  is  further  ad- 
vanced in  age. 
The  mineral  substances  contained  in  the  hair  of  man,  are  the 
sulphate  of  lime  and  sulphate  of  magnesia,  phosphate  of  these 
bases,  iron,  silica,  chlorine  and  a  little  alkali.    Furs,  silks  and 
