i2 4 THOMPSON YATES AND JOHNSTON LABORATORIES REPORT 
Such a marked relative increase in eosinophil cells suggested a worm infection of 
one kind or another. A number of blood films, thick and thin, were sent to the 
laboratory by the patient, the blood being taken at night and day, but no filarial 
embroyos were found in the blood. The faeces were also examined for ova of 
worms, but the result was negative. The blood from the swelling itself was also 
examined with negative result. 
I have thought it important to place on record this condition of the blood in 
this case so that the blood of cases of ' Calabar swelling ' may be likewise examined. 
The nature ot this case, however, is quite obscure, and I have called it ' tropical 
swellings ' for lack of a better name, and because Dr. Fletcher did not consider it 
to be one of' Calabar swelling.' 
I need not here discuss the views held as to the nature of these latter, but have 
contented myself with recording this remarkable condition of the blood in a possibly 
identical or allied condition. 
Note. — Wurtz and Clerc,' in a case of Fiiaria loa, have also found a marked 
eosinophilia. At no time were embryos found in the blood. Their count of five 
hundred leucocytes was as follows : — 
Targe mononuclear 5 per cent. 
Small mononuclear - - - 13 per cent. 
Polynuclear - - - - 29 per cent. 
Eosinophil - - - - 53 per cent. 
It is interesting to note also that there was a marked leucocytosis. 
WC 19,600 WC 1 / WC 1 , 1 \ 
-fY>— = — , lT7 ^ = - - (^rpr- = normal value . 
KC 4,100,000 KC 209 V RC 500 / 
1. Compt. Rend. Soc. de Biol., p. 1,704, 1904. 
