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While some consider that the quotidian tem- 

 perature is due to the fact that the malignant tertian 

 has a very variable period of development, viz., twenty- 

 four to forty-eight hours, and, in fact, all intermediate 

 times, others consider that with one generation of 

 parasites there is a second accumulation of young forms 

 in sufficient quantity to produce a quotidian attack. 



In quotidian fever, due to the malignant tertian 

 parasite, the characteristic febrile attack, with its 

 preliminary pseudo-crisis, is lost. The attack instead 

 of lasting about a day lasts a few hours only, as in the 

 simple tertian, and instead of a pseudo-crisis there is 

 a true crisis, but the young parasites, as in the malignant 

 tertian attack, are still coming into the circulation, and 

 there follows a rise which replaces the apyretic day in 

 the ordinary malignant tertian. 



According to Maurer, in the case of the quotidian 

 chart produced by one generation of malignant tertian 

 parasites we have the febrile attack produced by the 

 division of the majority of the segmenting forms, and 

 then a fall to normal occurs ; when, however, there is 

 a sufficient accumulation of young forms arising from 

 the same generation there is again a rise giving the 

 quotidian chart. As we have seen, the young forms 

 of the malignant tertian parasite persist during the 

 pyrexia. If, however, by any means they are destroyed 

 or cease appearing temporarily during the day of 

 pyrexia, we should get a fall to normal, and then as 

 soon as this inhibiting cause was removed, again a rise, 

 giving a quotidian chart produced by the malignant 

 tertian parasite. 



IRREGULAR TEMPERATURES 



Besides the typical malignant tertian temperature 

 chart and the quotidian chart, various irregular tern- 



