chicken have already been reported ( p. 85) . The 

 values for the remaining 7 are given here, since 

 many libraries do not have the journal. The 

 classes are indicated by Roman numerals, fol- 

 lov^'ed by a figure that is the percentage having 

 this number of nuclear lobes. At the end of the 

 series, the mean or index is given by an italicized 

 number: 



Cockatoo: I, 36.0; II, 60.0; III, 4.0; 1.68 

 Ouail: I. 27.0; II, 59.0; III, 13.5; IV, 0.5; 1.88 

 Sparrow: I, 26.0; II, 60.0; III, 12.5; IV, 1.5; 1.90 

 Swallow: I, 12.5; II. 65.5; III, 22.0; 2.70 

 Pigeon: I, 20.5; II, 63.0: III, 15.5; IV, 1.0; 1.97 

 Owl: I, 20.0; II, 48.0; III, 29.0; IV, 3.0; 2.15 

 Bunting: I, 14.0; II, 57.0; III, 23.0; IV, 6.0; 2.21 

 Perhaps the first investigator to compile 

 Arneth counts on birds was Shaw (1933) in his 

 study on pigeons. He took blood samples from 

 April through September. The index varied 

 from 1.76 to 2.11 but there was no seasonal 

 trend. The average index for the 6-month period 

 was 1.95, which is almost the same as Sugiyama 



found in the pigeons he studied. However, the 

 breakdown into classes was somewhat different. 

 Shaw found: Class I, 33 percent; II, 42 percent; 



III, 23 percent; and IV, 2 percent. Shaw also 

 studied an owl, and the percentages in the various 

 classes were as follows: I, 34; II, 48; HI, 18; 



IV, 0. The index was 1.84. This was some- 

 what lower than found in the owl studied by 

 Sugiyama. 



Shaw compared the Arneth counts of the bone 



marrow with the counts of the blood of pigeons. 



The averages based on three specimens were as 



follows: 



Blood: I, 36, II, 41; III, 22; IV, 1; 1.87 



Bone marrow: I, 75; II, 30; III, 5; IV, 0; 1.30 



It seems odd that during the twenty years, and 

 more, since the publications of Sugiyama and 

 of Shaw on Arneth counts for normal birds, this 

 technic, so common in the mammalian field, has 

 not been applied to the study of blood diseases 

 in birds. 



221 



