Report of first expedition to South America, 1913Members of the expedition: Richard PStrong [and others] . Fig. 1. — Lymph-node. Showing swollen endothelial cells in blood-vessel Fig. 2. — Smear from lymph-node. Endothelial phase in multiplication of parasite. Smear stained by Giemsas method. Plate VIII. — Oroya Fe%-er. CLASSIFICATION OF PARASITE 31 or rod-shaped bodies predominate in our specimens, and intheir morphological appearance some of them resemble con-siderably the rod-shaped bodies observed in certain species ofTheileria. However, in their staining reactions the
Report of first expedition to South America, 1913Members of the expedition: Richard PStrong [and others] . Fig. 1. — Lymph-node. Showing swollen endothelial cells in blood-vessel Fig. 2. — Smear from lymph-node. Endothelial phase in multiplication of parasite. Smear stained by Giemsas method. Plate VIII. — Oroya Fe%-er. CLASSIFICATION OF PARASITE 31 or rod-shaped bodies predominate in our specimens, and intheir morphological appearance some of them resemble con-siderably the rod-shaped bodies observed in certain species ofTheileria. However, in their staining reactions they aresomewhat different, the chromatinic substance is not differ-entiated from the cytoplasmic substance with the same ease,and distinct cross forms have not been observed. Moreover,their movements, so far as could be observed, were unlikethose described for the schizonts in the Piroj^lasmata. \Aliilethe organism at first sight might be regarded from its mor-phology alone as a species of bacterium, this idea is not sup-ported by further study. It is essentially a parasite of thered blood-cell: attempts to cultivate it on various culturemedia have been unsuccessful and the in
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