The remarkable thing is, that when we do begin in the sixteenth and seventeenth centuries to obtain evidence of agrarian epidemics in Germany, Sweden and Russia, which have eventually come to be identified, in the light of more recent knowledge, with ergotism, the type of the disease is different, not perhaps fundamentally or in the ultimate pathological analysis, but at all events different as being a functional disorder of the nervous system, instead of a disorder, on nervous lines, affecting the nutrition of parts and their structural integrity. This newer form, distinctive of Germany and north-eastern Europe, was known by the name of Kriebelkrankheit, from the creeping or itching sensations in the limbs at the beginning of it; these heightened sensibilities often amounted to acute pain, as in the beginning of the gangrenous form also; but the affection of the sensory nerves, instead of leading to a breakdown in the nutrition of the parts and to gangrene, was followed by disorder of the motor nerves,--by spasms of the hands and arms, feet and legs, very often passing into contractures of the joints which no force could unbend, and in some cases passing into periodic convulsive fits of the whole body like epilepsy, whence the name of convulsive ergotism[113]. Side by side with these German, Swedish and Russian outbreaks of convulsive ergotism, or Kriebelkrankheit (called by Linnaeus in Sweden by the Latin name _raphania_), there had been a renewal or continuance of the medieval epidemics in France, notably in the Sologne; but the French ergotism has retained its old type of _ignis_ or gangrene. It was not until the eighteenth century that the learned world became clear as to the connexion between either of those forms of disease among the peasantry and a damaged rye-crop, although the country people themselves, and the observant medical practitioners of the affected districts, had put this and that together long before. Thus, as late as 1672-75, there were communications made to the Paris Academy of Medicine[114] by observers in the Sologne and especially around Montargis, in which ergot of rye is clearly described, as well as the associated symptoms of gangrenous disease in the peasantry; but the connexion between the two was still regarded as open to doubt, and as a question that could only be settled by experiment; while there is not a hint given that these modern outbreaks were of the same nature as the notorious medieval _ignis sacer_. According to Häser, it was not until the French essay of Read (Strasbourg, 1771) that the identity of the old _ignis_ with the modern gangrenous ergotism was pointed out.