REVIEW OF THE LITERATURE
Infection of the cornea by Bacillus pyocyaneus is relatively rare, only 64 cases having been reported in the literature. Case reports have been collected by several authors, but the collections of Mauersberg,1 Jacobi2 and Morelli3 have been the most thorough. In 1910 Mauersberg collected 24 cases, to which he added 1 of his own. Two years later Jacobi reviewed the literature and added 4 cases that had occurred during the intervening period. In 1922 Morelli, after describing 3 cases, tabulated 38 found in the literature. There apparently was a duplication in this report, for he attributed identical cases to McNab4 and to Angus, whereas Angus is the given name of McNab. Of the cases recorded, 9 had occurred since Jacobi's paper was published, but Axenfeld's5 case, described in 1917, was omitted. As no complete report has been published since Morelli's article