560 Philippine Journal of Science 
mortem technique has been put at the end. The revision has 
been fairly thorough, but not so complete as could be wished 
owing to the war. 
Of additions, the following deserve mention: Goodpasture’s 
acid polychrome methylene-blue stain for frozen sections of 
fixed tissues and also for demonstrating meta-chromatically the 
different granules in the islet and acinar cells of the pancreas; 
Graham’s oxidase stain for the granules in the myeloblastic 
series of cells and leukocytes; Benians’ Congo red method for 
the demonstration of spirochetes; Claudius’ stain for flagella; 
and the approved method of classifying pneumococci with refer- 
ence to serum treatment. 
As useful procedures which hitherto have not been generally 
recognized, attention is called to the use of the safety-razor 
blade in section cutting, the employment of benzene in paraffin 
embedding, and Rubaschkin’s method of fixing celloidin and 
frozen sections to the slide for staining. 
