PLATE XXVII. 



GONOCOCCUS. 



A cover glass preparation of urethral pus, made by means of the loop, from 

 the ureihral meatus in a case two days after infection. 



Carbol fuchsin, washed in acidulated water. Two flattened epithelial cells 

 from the urethra, and one " polynuelear " leucocyte are represented. The stain 

 has tinted the bodies of the epithelial cells, but not that of the pus cell. The 

 cocci, without exception, occur in pairs with flattened or slightly concave faces; 

 here and there is a group of four. The diplococci are set in groups or colonies 

 which lie outside and unconnected with the cells; elsewhere, upon and within 

 them. The groups connected with the epithelial cells are surrounded with an 

 uncolored zone of ground substance indicating their location within the cell 

 protoplasm. Those about the nucleus of the leucocyte are in cell protoplasm. 



