EXPLAXATIOX OF PLATE Xo. 1. 
1. Tetanus bacilli, witb spores. 
2. Typhoid bacillus, with flagella. 
3. Plasmodium malarise, in human blood, crescentic form 
4. Staphylococci in pus. 
5. TTormal kidney, mouse. 
6. Vaccine bodies in cornea of rabbit. 
