PLATE 35. 



Photomicrography of Blood Parasites. 



MALARIA PARASITE 



x 1200 



Objective 



Ocular 



Condenser 



Illuminant 

 Aux. Condenser 



Screen 



Plate 



Exposure 



/ T i_" oil immers. 

 Achromat. N.A. 1.30. 

 Zeiss Projection x 4. 



Watson 'sHolos. 

 immersion N.A. 130. 



B 



Trypanosoma 

 gambiense x 2480 



Swift's T V oil immers. 

 Achromat. N.A. 1.30. 



Watson's x 8. 

 Watson's Universal 

 Achromat. N.A. 1.0. 



4 amp. arc Liliput. 

 Double convex lens, parallel beam, covering 



back lens of condenser. 

 Wratten's "B" green. "B+E" yellow-green 



5600-6000. 



Imperial Process. Wratten's Allochrome. 

 40 sec. omin. 



Both these organisms are parasitic Protozoa occurring in the blood. 

 That of Malaria exhibits one of the phases of its life-history, known 

 as the "crescent stage." The Trypanosoma gambiense is the cause 

 of sleeping sickness. 



Both preparations coloured bluish-violet with red nuclei by means 

 of Leishman's stain. 



Photos. W. B. R. 



[ To follow Plate 34 and page 240. 



