Am.  Jour.  Pharm.  1 
February,  1897.  / 
Pure  Spermaceti. 
105 
Having  accumulated  the  samples,  they  were  carefully  examined. 
Physically,  they  resembled  one  another  very  closely,  and  did  not 
differ  in  any  respect  from  the  commercial  material  examined  during 
the  past  three  years.  They  were  all  tested  in  the  same  manner 
that  those  reported  on  last  year  were ;  in  addition,  however,  the 
specific  gravity  was  taken  in  a  liquid  lighter  than  the  spermaceti,  by 
means  of  the  sinker  attached,  and  at  the  boiling  point  of  water  in  a 
pycnometer.  Two  methods  for  attaching  the  sinker  were  employed. 
In  the  first  case,  the  sinker  was  simply  tied  to  the  spermaceti ;  in 
the  second  case,  the  sinker  covered  the  spermaceti  so  that  only  one 
surface  was  exposed  to  the  liquid,  thus  reducing  the  question  of 
attached  air-bubbles  to  a  minimum.  This  was  done  in  the  follow- 
ing manner  :  Porcelain  crucible  covers  were  carefully  cleansed,  dried 
and  their  weight  taken.  The  melted  spermaceti  was  poured  into 
these  covers,  allowed  to  cool  at  the  temperature  of  the  working- 
room  and  the  specific  gravity  taken  at  the  end  of  two  days  with 
the  spermaceti  in  situ.  The  congealing  points  were  also  observed. 
The  results  are  as  follows : 
Persons  Secured  Samples. 
Melting  Point,  C 
Congealing  Point,  C. 
Acid  Number. 
Esther  Number. 
0 
Os 
T° 
<*gs 
H> 
53 
u 
qP 
tn 
0' 
gs 
o1 
00 
OSJ 
"So 
rt  u 
u  <u 
OS 
°h 
<JO 
'u  . 
til 
Specific  Gravity  at  150  C, 
in  Alcohol. 
Specific  Gravity  at  150  C, 
Sinker  Attached. 
Specific  Gravity  at  150  C, 
Spermaceti  in  Sinker. 
Specific  Gravity  at  150  C. 
by  Suspensory  Method. 
Remington  .  . 
43-5° 
42° 
0-47 
129  62 
0  8406 
0-8083 
0-8981 
0-8979 
0-8902 
0-9381 
Scoville    .  .  . 
44*5° 
43° 
0-IO 
125* 
0-8405 
0-8083 
0-8989 
0-8992 
0-8987 
0-9385 
Patch  .... 
45° 
43° 
0*25 
124-8 
0-8404 
0-8082 
0-9042 
0-9009 
0-9036 
0-9401 
Searby  .... 
44° 
42-5° 
0-2I 
131-06 
0-8458 
0-8124 
0-9066 
0-9007 
0-8954 
0-9510 
Searby  .... 
43° 
42° 
0*16 
136*31 
0-8432 
0  81C9 
0-8960 
0-9099 
0-8118 
o-94i3 
Searby  .... 
43'5° 
42° 
0-43 
129-91 
0-8432 
0-8160 
0-8969 
0-9000 
0-9009 
0-9420 
Kebler  .... 
44° 
43° 
°'3° 
130-30 
0-8412 
0-8089 
0*8960 
0*8972 
0-8993 
0-9394 
Kebler  .... 
43° 
42° 
o-35 
130-20 
0-8412 
0-8089 
0-8899 
0-8974 
0-8937 
0-9400 
Kebler  .... 
44° 
43° 
023 
125-81 
0-8410 
0.8087 
0-8982 
0-8983 
0-8982 
0-9421 
Kebler  .... 
46° 
44'5° 
019 
129-02 
0-8412 
0-8089 
0-9079 
09079 
0-9013 
0-9410 
Kebler  .... 
44'5° 
43° 
0*29 
128-13 
0-8419 
0-8097 
0-9103 
0-9018 
0*8992 
0-9500 
Commercial  . 
44° 
43° 
0-09 
125-1 
0-8409 
0-8093 
0-8991 
0-8993 
0-9010 
0-9400 
