244: p. MANSON ON THE PERIODICITY OF' 



comparing with two otliers is too high set ; this circumstance ex- 

 plains the range of normal temperature being in the 100th instead of 

 the 99th degree as is usual. 



Food of the kind usually consumed by middle-class Chinese, viz., 

 rice, a little pork or beef, salted and fresh fish and vegetables, was 

 taken at seven a.m , one p.m. and seven p.m., or thereabouts. 



Sleep during tlie night was constantly interrupted to take obser- 

 vations, and consequently was frequently indulged in during the 

 day. 



The meteorological observations recorded in the chart were made 

 with an ordinary large aneroid barometer, with thermometer at- 

 tached. The instruments, though good enough for the purpose in 

 hand, are probably not perfectly reliable. I have accordingly pro- 

 cured from the customs a copy of their meteorological register cor- 

 responding to the period of these observations. This is very 

 accurately kept, and may be trusted with the exception of the after- 

 noon readings of the thermometer. In consequence of the faulty 

 position of the instruments they stand 3° too high during the after- 

 noon. 



Both lads come from Hooie~Oah, a filarious district, some three 

 days' journey to the north of Amoy. They have resided in Amoy 

 but a very few months. Li-Kha (I. in the chart) is 21 years of age, 

 of average size, and in good health. He has no history of fever or 

 any serious disease. Tiong-Seng f II. in the chart) is 21 years of 

 age, and is fairly well nourished. When about 14 he had what he 

 called ague (what I call lymphatic fever), and from that time till 

 now has on an average an attack about once a month. Tlie attacks 

 begin with giddiness, weariness of the body and limbs. This 

 gradually merges into a cold stage, with moderate rigors of two or 

 three hours' duration ; then succeeds a hot stage of very high fever 

 of 24 hours' duration, terminating in moderate diaphoresis, lasting 

 for an hour or two. The fever is accompanied by complete anorexia, 

 and during its continuance the inguinal and femoral glands in- 

 variably swell up and pain him excessively, those on the right side 

 being affected more than those on the left. Unless the attack of 

 orchitis or inflammation of the tunica vaginalis, to be hereafter 

 alluded to, he has never had any trouble about the genitals or limbs, 

 nor any signs of elephantoid disease. There is manifestly nothing 

 of an ague type about these fever attacks. Though recurring about 

 Ulice a month (he had another attack without orchitis, however, on 



