A STUDY OF THE BACTERIAL CAPSULE BY NEW METHODS*t

T h e purposes of this c o m m u n i c a t i o n are to p resen t a new m e t h o d of s t a in ing bac te r i a l capsules, to record the d e m o n s t r a t i o n b y s ta ins of the i r p resence on a n u m b e r of supposed ly n o n c a p s u l a t e d organisms, to p o i n t o u t the s t r u c t u r a l re la t ion of flagella to capsules a n d to cons ider the bear ing of these obse rva t ions on p resen t d a y concep t ions of the n a t u r e of the capsule.