H. Seidelin 
103 
EXPLANATION OF PLATE V. 
All the figures have been drawn from iron-haematein preparations with Zeiss’s prism, 
using Zeiss’s apochr. obj. 3 mm. or 2 mm. and compens. oc. 18. Figs. 1-5 x 2000, 
Fig. 6 X 3000. My thanks are due to Miss M. Ehodes, of the Lister Institute, for executing 
the drawings. 
Fig. 1. Trypanosoma lewisi in film, using the wet method. (Fixation in Schaudinn’s 
liquid.) 
Figs. 2, 3. Fish trypanosomes from digestive tube of leech {Hemiclepsis marginata ); wet 
method. (Schaudinn’s liquid.) 
Fig. 4. The same in the interior of the half digested mass of blood, in section of leech. 
(Schaudinn’s Uquid, paraffin section.) 
Fig. 5. Part of digestive tube of the same leech. To the right are the epithelial cells; to 
the left the partially digested blood, and between both the trypanosomes, of which 
only a part of the body is to be seen, most of them having been cut through in an 
irregular manner. 
Fig. 6. Leishmania donovani in section of spleen. The outline of the nucleus of the host 
cell has come out too darkly in the reproduction. (Formalin, paraffin.) 
