1902-3.] Dr G. A. Gibson on Some Observations on Cyanosis. 399 
Haemoglobin. 
Erythrocytes. 
Leucocytes. 
Per cent. 
Per cm. 
Per cm. 
Oct. 20th 
131 
.... 7,500,000 .... 
11,400 
Oct. 31st 
120 
.... 7,000,000 .... 
9,680 
Nov. 17th 
110 
.... 7,250,000 .... 
10,000 
Dec. 3rd 
110 
.... 6,500,000 .... 
11,000 
Dec. 3rd 
oxygen inhalation 
was begun. 
Dec. 5th 
115 
.... 7,200,000 .... 
9,800 
Dec. 8th 
110 
.... 6,000,000 . . 
10,000 
The results of these two observations seem to indicate that the 
inhalation of oxygen is barren of result. It is generally understood 
that the ordinary air of the atmosphere contains considerably more 
oxygen that can be absorbed in any circumstances, and the results 
of our observations, now fairly numerous, are strongly in favour of 
this conception. 
It is a pleasure to express my warm thanks to my house 
physicians, Dr L. C. Peel Ritchie, Dr H. H. Bullmore, and Dr 
A. F. R. Conder, for their unwearied devotion in conducting the 
examinations of the blood of many patients in pursuance of these 
observations, and to acknowledge the assistance which we have 
received in our investigations from Dr A. Goodall and Dr 
A. Dingwall Fordyce. 
(Issued separately April 4, 1903. ) 
