Plate I. 
A 
Bacillus Diseases of Bees. 
Comb from Hive suffering from Bacillus aZyci (Foul Brood)— Natural Size. B, 
Healthy Juices (500 diameters). C, Bacillics alvei in Juices, Early Stage, Lept^ 
thrix Form (500 diameters). D, Bacillus alvei in Juices, Kater Stage (500 
diameters). E, Bacillus alvei, Spores, Latest Stage (Coffee-coloured Material) 
—500 diameters. F, Streak of Blood laden with Bacillus alvei (1000 diameters). 
G, Group of Bacillus Gaytoni (500 diameters). 
