508 
Alkalinity  of  the  Blood. 
I  Am.  Jour.  Pharm, 
\  November,  1908. 
i*4  176 
12   159 
i"o   133 
o'8o  =   96 
060   79 
0*40  •                                                                .  '.   53 
0"20   26'6 
It  is  not  customary  to  express  the  alkalinity  of  blood  by  the  quan- 
tity of  acid  required  for  its  neutralization,  but  in  milligrams  of  an 
alkali,  sodium  hydrate  being  generally  selected  for  the  purpose. 
The  calculation  will  be  as  follows:  The  equivalent  weight  of  tartaric 
CD  Ed  F 
Oxyhemoglobin 
Metkemoglobin 
Reduced  Hemoglo- 
bin 
C  0  Hemoglobin 
! 
•*.  v 
.  ":' 
>V  ■ 
... 
-:' 
— 1 
'  - 
Si; 
&  
J 
aci 
Fig.  2. — Blood  spectra. 
H  C  H  O 
d     2  2  i_ G=  149  64.    Tartaric  acid  being  dibasic,  one-half  the 
number  of  molecules  are  taken  to  make  a  normal  solution  which 
equals  75  grammes  (approximately)  to  a  liter;  for  the  present  solu- 
tion there  is  taken  ^-J--^  of  the  normal,  which  is  equivalent  to  375 
milligrams  to  a  liter.  Sodium  hydrate  has  40  atoms  to  its  molecule, 
which  gives  an  equivalent  of  30  grammes  to  a  liter,  therefore 
of  the  normal  tartaric  acid  solution  is  equal  to  or  200  milligrams, 
and  each  cubic  centimetre  of  acid  solution  will  give  an  equivalent  of 
0  0002  milligrams  of  the  alkali. 
Every  100  c.c.  of  blood  will  equal  266  mgs.  of  sodium  hydrate 
