The eruptions vary in color in accordance with the mixture of the different humors with the corrupt blood. Hence some are light colored, some the color of saffron, some red, some green, some livid, some black, and the virulence of the disease is the greater, the nearer the color approaches to black. There are, too, four varieties of the eruption, distinguished by special names. When the eruption is light colored and tends to suppuration, it is called _scora_. When it is very fine and red, it is called _morbilli_ or _veterana_. The distinction between _variolae_ and _morbilli_ is in the form and matter of the disease, for in _variolae_ the pustules are large and the matter bilious (_colerica_), while in morbilli the eruption is smaller and does not penetrate the skin (_non-pertransit cutem_). _Variolae_, on the contrary, forms a prominent pustule (_facit eminentiam_). A third form of the disease displays only four or five large, black pustules on the whole body, and this form is the most dangerous, since it is due to an unnatural black bile, or to acute fevers, in which the humors are consumed. This variety bears the name of _pustula_. A fourth form is called _lenticula_. This latter form occurs sometimes with fever, like synocha, sometimes without fever, and it arises from pestilential air or corrupt food, or from sitting near a patient suffering from the disease, the exhalations of which are infectious. The premonitory symptoms of _variolae_ are a high fever, redness of the eyes, pain in the throat and chest, cough, itching of the nose, sneezing and pricking sensations over the surface of the body. _Morbilli_ is a mild disease, but requires protection from cold, which confines and coagulates the peccant matter. Attention is directed to the not infrequent ulcers of the eyes, which occur in _variolae_ and may destroy the sight; also to ulcerations of the nose, throat, oesophagus, lungs and intestines, the latter of which often produce a dangerous diarrhoea. When _variolae_ occurs in boys, it is recommended to tie the hands of the patient to prevent scratching. Whey is said to be an excellent drink for developing the eruption of _variolae_, and the time-honored saffron (_crocus_) appears in several of Gilbert's prescriptions for this disease. Here, too, we find the earliest mention of the use of red colors in the treatment of _variolae_ (f. 348 c): "_Vetule provinciales dant purpuram combustam in potu, habet enim occultam naturam curandi variolas. Similiter pannus tinctus de grano._" Acid and saline articles of food should be avoided, sweets used freely, and the patients should be carefully guarded from cold. Not the least interesting pages of the Compendium are those (there are about twenty of them) devoted to the discussion of poisons, poisoned wounds and hydrophobia.