PART II 



HEMATOLOGY 



ESTIMATION OF THE AMOUNT OF HEMOGLOBIN 



The best form of hamoglobinometer now obtainable is un- 

 doubtedly Haldane's ; it was introduced since the first edition 

 of this book (in which Gowers' and Oliver's were described) was 

 published, and is now generally used. It is as simple and cheap 



Fig. 42.— Gowers' H.emoglobinometer. 



as Gowers', and almost as easy to use, and gives much more 

 accurate results. In Gowers' method the margin of error is very 

 considerable, though it will answer' perfectly well when we simply 

 wish to see whether a patient is improving under treatment, but 

 must not be relied on for absolute results. Oliver's haemoglo- 

 binometer is a little more difficult to use, but is somewhat easier 

 to read ; its price prevents it from coming into universal use. 

 GowERs' H.EMOGLOBINOMETER consists of two tubes mounted 



17s 



