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Fig. 74. — Blood cells of the fowl. Wright's slain. From a S. C. Rhode Island Red cock- 

 erel. I, Basophile (mast cell) with lilac staining spherical granules. 2, Eosinophile with 

 rod-shaped acidophile bodies. 3 and 4, Eosinophiles with acidophile staining round gran- 

 ules, s, Eosinophile ruptured. 6. Mononuclear leucocyte with vacuoles in the cyto- 

 plasm. 7 and g, Transitional leucocytes (first stage). 8, Mononuclear leucocyte. 10, 

 II, and 12. Small lymphocytes. 13 and 14, Large lymphocytes. 15, A lymphocyte. 16, 

 Lymphocyte (nucleus centrally located). 17 and 18, Transitional leucocyte. 19, Throm- 

 bocyte. 20, Neutrophiie (polymorphonuclear). 21. Erythrocytes. 



