361 
Aphidirhodeine in ether 
4d suspended in dilute alcohol with ammonia be ae 
3. As dissolved in bisulphide of atbdn : 
Aphidiluteine ate: 
Aphidiluteoleine % 8S 
Aphidirhodeine . Sali Be). Mtoobe) O8F 8 
OxssERVATIONS and EXPERIMENTS on the Rep Buioop-cor- 
PUSCLE, CHIEFLY with REGARD to the acrion of GaAszEs 
and Varours. By KE. Ray WLanxkeEster, Radcliff 
Travelling Fellow, University of Oxford. 
Preliminary.—1. The uses of gases and vapours as a means of micro- 
chemical research.—2. Opinions and doubts concerning the red blood- 
corpuscle (bibliography).—3. The normal appearance of the frog’s red 
blood-corpuscle.—4. The normal appearance of the human red blood- 
corpuscle.—5. Means of studying the changes of the blood-corpuscles 
in disease.—6. Effect of pressure on the red blood-corpuscle.—7. 
Effect of isolation: a, by adhesion; 4, by oil.—8. Effect of water in 
minute quantities gradually added.—9. Hffect of CO, gas.—10. Effect 
of osmie acid (vapour).—11. Effect of acetic acid (vapour and liquid). 
12. Effect of aleohol.—13. Effect of ammonia gas.—14. Effect of 
chloroform (vapour and liquid).—15. Effect of bisulphide of carbon. ~ 
16. Effect of benzine.—17. Effect of turpentine oil—18. Effect of 
solution of acetate of rosanilin and of tannin (Robert’s experiments).— 
19. Effect of carbonic oxide.—20. Effect of cyanogen gas.—21. Effect 
of sulphuretted hydrogen.—General conclusions and summary. 
THE object of the disconnected observations which are here 
recorded was threefold: firstly, to ascertain whether certain 
vapours and gases having marked physiological influence on 
animals exert any direct action on the red blood-corpuscles, 
and to determine whether those known, by investigation with 
the spectroscope, to affect the hemoglobin produce visible 
changes in the corpuscle; secondly, to examine into the 
chemical and formal structure of the red corpuscle ; thirdly, 
to obtain, by a detailed examination of the influence of re- 
agents, and especially gaseous reagents, on a typical histo- 
logical element, a starting-point for further micro-chemical 
studies. I cannot consider, as far as relates to the chemical 
