GRAHAMELLA. 323 



inoculable into healthy non-splenectomized dogs, producing 

 acute sjmaptoms and ultimate death of the host in several 

 cases. 



Habitat. — Blood of the dog, Ganis familiaris Linn. : United 

 Provinces, Muktesar. 



269. Grahamella muris Carini. 



Grahamella anuria, Carini, 1915, pp. 103-4. 



Bartonella muris, Mayer, 1925 ; Mayer, Borchardt, & Kikuth, 

 1926, p. 559 ; Wenyon, 1926, p. 1060. 

 ■fGrahatnella sp., Knowles, 1928, p. 463. 

 ^Bartonella muris, MeCarrison & Mula Singh, 1931, pp. 945—9. 



Dot- and rod-like bodies in the red blood- corpuscles of mice. 



Remarks. — Mayer (1925) described this organism from the 

 red blood- corpuscles of mice which had been treated with 

 Bayer 205 for trypanosome infections. Later, Mayer, Bor- 

 chardt, and Kikuth (1926) showed that the same bodies appear 

 in anaemia caused by splenectomy in rats. They believed 

 that the operation had stimulated a latent infection. 

 MeCarrison (1927) and WiUs (1930) showed that the same type 

 of anaemia may arise in a proportion of non-splenectomized 

 rats when they are fed on a diet deficient in fat- soluble vitamins 

 and vitamin C. The faulty food would thus appear to induce 

 functional injury to the spleen, thereby lowering resistance to 

 infection, in a manner comparable to, though not so effective 

 as, splenectomy. MeCarrison and Mula Singh (1931) have 

 further shown that the blood of one- to four-day-old suckling 

 rats born of splenectomized or non-splenectomized mothers 

 may also show the infection. 



Knowles (1928) recorded Grahamella in certain films of rats' 

 blood prepared by Parmanand of Bombay. Up to eight 

 forms per red blood- corpuscle were encountered, while a very 

 few lay apparently free and extra-corpuscular. 



Habitat. — Blood of rat : Madras, Madras ; Bombay, Bom- 

 bay. 



270. Grahamella sp. (Fig. 159.) 



" Corps Bartonelliformes," de Mello, 1928, pp. 515-16, fig. B, 29-38. 

 Intra-corpuscular bodies, bipolar, navicular, fusiform or 



BCD 



Fig. 159. — Grahamella sp. (After de Mello.) 



y2 



