66 CALIFORNIA ACADEMY OF SCIENCES. [3D See., 



EXPLANATION OF THE FIGURES. 



Figures 1-47, 50-78 have been drawn from Zeiss T V hom. im., with oil im- 

 mersion contact between the Abbe condenser and the underside of the slide. 

 Ocular 2. 3. 4. Figures 44, 48, 79-84 have been drawn from Zeiss apochrom. 

 3 mm. Ocular 12 and 18. Both daylight and gaslight were used. The images 

 were projected on the working table, outlines drawn with camera, details filled 

 in. They are from cover-glass preparations fixed with absolute alcohol. 



All the figures are from elements in the blood of Batrachoseps attenuates. 



PLATE I. 



NON-NUCLEATED ERYTHROCYTES. 



i to 6. Six non-nucleated erythrocytes of different forms and sizes. 

 Ehrlich-Biondi. Oc. 2. 



NUCLEATED ERYTHROCYTES. 



7. Large round erythrocyte with distinct bipolar nucleus. 



8-9. Smaller erythrocytes with oblong nuclei. 



10. Large erythrocyte with large nucleus. Above four, Ehrlich-Biondi. 



n. Round erythrocyte, Ehrlich's neutrophile stain. 



EOSINOPHILE LEUCOCYTES. 



12. Average size. Ehrlich-Biondi. Oc. 3. 



13. Larger. Ehrlich-Biondi. Oc. 3. 



POLYMORPHOUS LEUCOCYTES. 



All stained with Ehrlich-Biondi and washed with oxalic acid solution in 

 water. (Except iS£ and 19, which are toluidine stains. ) Oc. 3. 



14. The granosphere is starlike and encloses an archosome with two cen- 

 trosomes separated by a light colored bar. 



15. The granosphere is less distinct, and the archosomes are entirely sep- 

 arated, one containing two, the other one centrosome. 



16. The granosphere is small but distinct, rounded in outline. The two 

 archosomes are separated. 



17. Granosphere not distinct. Three archosomes, one of which has two 

 centrosomes. 



18a. The center of a leucocyte; the nucleus is not figured; the granosphere 

 is starlike; the archosome is round, with three centrosomes of unequal size. 

 Ehrlich-Biondi. 



186. The center of a leucocyte; the nucleus not figured; the granosphere 

 is stained pink; the cytoplasm is bluish; the archosome is not entire, but is 

 broken up into several semiglobular zones; centrosomes not stained. Tolui- 

 dine. 



18c . A leucocyte with three separate archosomes. Ehrlich-Biondi. 



19a. A large polymorphous leucocyte; granosphere is stained pink; two 

 centrosomes. Toluidine. 



196. A large leucocyte with pink granosphere. Centrosome not stained. 

 Toluidine. 



20. A mononucleary leucocyte stained with Ehrlich-Biondi, the deep stain- 

 ing showing presence of haemoglobin. 



