THE CAMPAGNA 



261 



showing the relation of the seasonal prevalence of 

 Anopheles to the incidence of attacks; experiments 

 exhibiting the protective effects of mosquito- 

 curtains ; inoculation-experiments ; researches on 

 the blood-parasites of birds ; and many other 

 points. . . . Nor can we pause to notice the many 

 attempts now being made by health officers and 

 others to pursue the methods of prophylaxis indi- 

 cated ; these efforts are necessarily in the tentative 

 stage, but, so far, and especially where carried out in 

 connection with small communities and institutions, 

 they are giving promise of gratifying success." 



The famous experiment made by Dr Sambon 

 and Dr Low in 1900, must be recalled here: — 



" Dr Luigi Sambon and Dr G. C. Low, both 

 connected with the London School of Tropical 

 Medicine, volunteered to live from June till October, 

 that is to say, through what may be called the 

 height of the malaria season, in a part of the 

 Campagna near Ostia, which is so infested by 

 the disease that no one who spends a night there 

 under ordinary conditions escapes the effect of 

 the poison. Dr Sambon, Dr Low, Signor Terzi, 

 and their servants, have now exposed themselves 

 to the pestilential influence of this valley of the 

 shadow of death for over two months. They live 

 in a mosquito-proof hut ; they take no quinine or 

 other drug which might be regarded as prophy- 

 lactic. Not one of the experimenting party has 

 the least sign of infection. # . . . 



* Dr Patrick Manson, in the British Medical Journal, 

 29th September 1900, gives the following account of this 

 experiment : — u A wooden hut, constructed in England, was 

 shipped to Italy and erected in the Roman Campagna, at a 



