ioH 



I'lii'PEU TREE AS A CAUSE OF HAY FEVER. 



(Jianje-Skool and Milncr Road are on the extreme western 

 side of the town; and there were few or no pepper trees to the 

 west of the plates. 



Ramblers' Club. — This is in the central part of the town, and 

 pepper trees are plentiful in the neighbourhood. Unless stated 

 to the eontrar}', the plates were hung on the balcony about 28 

 feet above the ground, and some 40 paces from the nearest 

 pepper tree. In a few specified cases the plates were hung in 

 the grounds attached to the Club. 



Government Buildings. — Pepper trees ai'e plentiful in the 

 neighbourliood and occur ou all sides of the site, but there were 

 none within some 60 paces of the plates. 



Park Road. — The site is also on the extreme western side of 

 the town, but there was a row of pepper trees some 18 paces to 

 the M-est of the plates. Tliese were the only pepper trees in the 

 neighbourhood. 



Bloemfontcin Club. — This is in the central region of the 

 town, pepper tz'ees occur on all sides, but at a considerable dis- 

 tance. The plates were hung on the balcony. 



(The meteorological conditions in Bloemfontein diu'ing the 

 exposure of pollen pUites are given in Tables V, VI). 



Table V 

 Meteorological Observations: Bloemfoxteix. October, 1919. 



