STUDIES IN THE BLOOD CYTOLOGY OF THE RABBIT : I. BLOOD COUNTS IN NORMAL RABBITS

A study of the blood cytology of normal male rabbits was carried out from October 20, 1927 to November 22, 1928 in connection with an investigation of constitutional and environmental factors related to the occurrence and course of disease. In 1110 observations on 174 animals, total red and white cells counts, differential white cell counts by the supravital method, and hemoglobin estimations were made. A statistical analysis of the results obtained is presented. Attention is directed to the occurrence of wide variations in the numbers of the various white cells as contrasted with comparatively small variations in the numbers of red cells and of hemoglobin content. The results recorded are regarded as representing approximate rather than fixed values of normality.