630 



SCIENCE 



[N. S. Vol. XXXI. No. 799 



a leucocytosis, which brings in the younger 

 neutrophiles, i. e., with one or two lobes, from 

 the bone marrow. If there is enough toxin or 

 bacilli present, these neutrophiles react 

 even with a leucocytosis and, in all such 

 cases, pus has been shown to be present. As 

 the infection disappears, the neutrophiles 

 cease to react and the number of white blood 

 cells drops until the blood picture is again 

 normal. A good prognosis in such an infec- 

 tion as pneumonia would be a high white 

 blood cell count together with a large propor- 

 tion of the neutrophiles having the smaller 

 number of lobes to the nucleus, for in this 

 case the neutrophiles which react are being 

 used up and new ones brought into the blood 

 to take their place. 



The following are a few typical blood pic- 

 tures : 



'Normal 



Differential Neutrophile 



Differential Blood Count Count 



W. B. C 8,000 I. 5 



Neutrophiles 05 II. 22 



Large lymphocytes .. 23 III. 48 48:52 



Small lymphocytes .. 12 IV. 26 



Eosinophiles V. 5 



Basophiles 



Txiberculosis 



W. B. C 10,000 I. 20 



Neutrophiles 64 11.40 75:25 



Large lymphocytes .. 28 



Small lymphocytes .. G III. 30 



Eosinophiles I IV. 10 



Basophiles 1 V. 



Pneumonia 



W. B. C 20,000 L 30 



Neutrophiles SO 11.40 80:20 



Large lymphocytes .. 15 



Small lymphocytes .. 5 III. 20 



Eosinophiles IV. 10 



Basophiles V. 



Pus Case 



W. B. C 24,000 I. 4 



Neutrophiles 80 II. 14 



Large lymphocytes .. 12 III. 18 



IV. 32 27:73 



Small lymphocytes ..6 V. 21 



Eosinophiles 1 VI. 9 



1 VII. 2 



The differential blood count is necessary to 

 determine the different kinds of blood cells 

 present in the blood, but the state of the neu- 

 trophile is also of great assistance in making 

 the diagnosis and especially the prognosis. 



A paper which gives in detail these experi- 

 ments, which were carried on in the laboratory 

 of Dr. Max Hartmann, in Berlin, will appear 

 shortly; also the hospital observations made 

 in connection with Dr. James Alexander 

 Miller at the Bellevue Hospital will be re- 

 ported in a paper with Dr. Miller in May. 

 Margaret A. Eeed 



NOTES ON THE FOOD OF A KING EIDER 



A FEMALE king eider (Somateria specta- 

 hilis) was captured on Seneca River, IST. T., 

 November 26, 1909, by Mr. J. T. Lloyd. After 

 preserving the bird for the Cornell Univer- 

 sity Museum (No. 5332), the enteron was 

 opened and examined for its food contents. 

 In view of the scarcity of accurate notes deal- 

 ing with the food of our wild ducks, the ma- 

 terial examined would seem to justify the 

 presentation of the data which follow: 



CONTENTS OF THE CKOP AND STOMACH 



Pisces — 1 specimen Boleosoma nigrum olmstedi, 



johnny darter. 

 Amphibia — 2 specimens Bona pipiens, leopard 



frog. 

 Insecta — 3 specimens Gyrinus, whirligig-beetle. 

 Crustacea — 67 specimens Gammarus fasciatus, 



fresh-water " shrimp." 

 Mollusca — 1 specimen Planorhis, small, 2 mm. in 



diameter. 



CONTENTS OF THE GIZZARD 



Amphibia — Bones of at least one frog. 

 Insecta — 2 specimens, Gyrinus. 



2 specimens, Corisa, water-boatman. 

 Crustacea — 5 specimens, Gammarus fasciatus. 



1 specimen, Asellus. 

 Mollusca — 3 specimens, Physa. 



1 specimen, Limrmea, small. 



1 specimen, Planoriis, small, 1 mm. in 



diameter. 

 Several pieces of the shell of some large 

 bivalve. 

 Vegetable — 2 small seeds not identifiable. 



3 small pieces of the leaves of some 

 aquatic plant. 



