INFLUENCE OF DA Y AND NIGHT. 



799 



until 1 P.M. This small morning variation preceding the rise to the 

 maximum would explain some of the uncertainty concerning the 

 time of the maximum. The second important cause is the difference 

 in the meals of the English and German people ; the "fruhstuck " 

 is a small meal compared with the English breakfast, and thus, in 

 the observations made in England, the morning fall, beginning about 

 ten o'clock, would be masked by the increased warmth due to a hearty 

 meal. 



Other causes for the different results are to be sought in the fact 

 that the observations are not comparable as regards the age, health, 

 meals, and work of the subjects of the experiment, and the temperature 

 was taken in different ways. 



The following curve (Fig. 76), given by Kinger and Stuart, 6 shows the 

 daily fluctuations of temperature in a boy 12 years old ; the thermometer, 

 a non-registering one, was kept in the closed axilla throughout the 



1 The references are mostly given on p. 789 of this article. 



2 Indian Ann. Med. Sc., Calcutta, 1873, vol. xvi. p. 550. 



3 Arch. f. Anat., Physiol. u. wissensch. Med., 1851, S. 159. 



4 Jaeger, Deutsches Arch. f. klin. Med., Leipzig, 1881, Bd. xxix. S. 525. 



5 Rev. scient., Paris, 1885, tome ix. pp. 430, 629. 



6 Proc. Roy. Soc. London, 1877, vol. xxvi. p. 187. 



