418 APPENDIX II 



possible to state how long a person has been dead by estimating 

 the percentage of living cells so many hours after the death of the 

 subject. 



Bibliography. H. C. Ross: (1) " On the Death of Leucocytes, "Journal of 

 Physiology, vol. xxxvii., 1908, p. 327; (2) "On a Combination of Substances 

 which Excites Amoeboid Movements in Leucocytes," The Lancet, Jan. 16, 

 1909, p. 152; (3) "On the Cause of Achromasia in Leucocytes," The Lancet, 

 Jan. 23, 1909, p. 226; (4) "On the Modification of the Excitant for Leu- 

 cocytes composed of Methylene Blue and Atropine," The Lancet, Jan. 30, 

 1909, p. 313. 



