i8 



THE CAVENDISH LECTURE 



tion. To deny that, Gentlemen, is after all to deny the progress 

 of medical science. You know in a general way that the death- 

 rate, corrected for age, has fallen enormously in this country. 

 But I should like to place before you its actual history. 



You see (Figs. 6 and 7) at once the three great periods in the 



GSHESAL HEALTH. 



T F r" V 



179 150 l'-3 100 



T 



50 23 O -as -50 -'S •too -125 -150 -175 



ROBUST flOmifitliT HRalTH? EELICATB 



MOTHER 



Fig. 4. — Diagram to illustrate fall in health of son with fall in health of 

 mother. Note anomalous position of sons of delicate mothers. 



history of our English death-rate : (i) The period of stability, quite 

 uninfluenced by factory legistation, 1 835-1 865 ; (2) the period of 

 sanitary science, 1 866-1 891, with its continuous fall in the death- 

 rate ; (3) the period of modern medicine, 1891-1911, with still 

 further acceleration in the fall. I think we can be quite confident 



