We must not omit here to remark that three years before (1411), and thirteen years afterwards, two diseases entirely similar and equally general, made their appearance in France, of which we nowhere find that any notice has been taken up to the present time. The first was called _Tac_, the second _Ladendo_, which designations have since entirely gone out of use. Both were accompanied by very severe cough, so that in the former, ruptures not unfrequently occurred, and pregnant women were in consequence prematurely confined, and by the latter, from its universality, the public worship was disturbed. In the ladendo, there seems to have been an affection of the kidney of an inflammatory character, and much more severe than in the coqueluche of 1510, a memorable example of epidemic influence, and without a parallel in modern times. This pain in the kidneys, which was as severe as a fit of the stone, was followed by fever with loss of appetite, and an incessant cough that terminated in disagreeable eruptions about the mouth and nose. The disorder ran a course of about fifteen days, and was generally prevalent throughout October, being unattended with danger, notwithstanding the severity of its symptoms. One might almost be tempted to regard the tac of 1411 as the coqueluche of 1414, which is only slightly alluded to by Mezeray, and whereof the author from whom we are now quoting, has made no mention; for a false date might easily occur here. Yet this must remain undecided until we can obtain fuller information, for we have experienced, even in the most recent times, an example of influenzas (1831 and 1833) following each other in quick succession. Gastric symptoms and an inordinate degree of irritability accompanied the spasmodic cough, and the complaint terminated with evacuations of blood. However, the disease was unattended with danger, and lasted upon the whole only three weeks[476].