Am.  .Tour.  Pharm. 
June,  1897. 
Alexandria  and  India  Senna. 
301 
AVERAGES  EXPRESSED  IN  MICROMILLIMETERS. 
Table  i. 
India  Senna. 
Lower  side  of  leaf. 
38-61     x  26*815 
India  Senna. 
Average  diameter,  40-02 
India  Senna. 
Upper  side  of  leaf,  40*6 
Table  2. 
Table  3. 
Alexandria  Senna. 
Lower  side  of  leaf. 
40-04    x  286 
Alexandria  Senna. 
Average  diameter,  49-3, 
Alexandria  Senna. 
43 '09 
Fig.  2.  India  senna,  upper  side  of  leaf ;  a,  epidermal  cell  ;  />,  stomata ;  cr 
hair  (scarcely  in  focus)  ;  e,  uebenzelleu. 
Nevertheless,  it  is  not  to  be  denied  that  sections  of  epidermis 
may  be  found  in  which  the  India  senna*  may  exhibit  the  larger 
cells.  A  series  of  about  forty  measurements,  made  by  a  student  in 
the  school  here,  showed  that  while  the  largest  cells  are  found  in 
