FIG. 25. J. HEXRI FABRE 

 (1823-1913) 



FIG. 26. WALTER REED (1851-1902) 



From H. A. Kelly's Walter Reed and 



Yellow ppvpr 



FIG. 27. \V. T. G. MORTON (1819-1868) 



From Camac's Epoch-Making Contributions 



to Medicine 



FIG. 28. EDWARD JENNER 



(1749-1823) 



