104 
FACTS AND OBSERVATIONS. 
dant tlian that of the air. 4. Plants in the country evolve 
more ozone during the day than town plants. 5. From this 
cause country air is more exhilarating than town air. 6. In 
the' midst of towns, and of a dense population, the night air 
exhibits more ozone than that of the day, but in proportion 
as the animal population diminishes, and the vegetable king¬ 
dom predominates, the diurnal ozone increases until it 
exceeds that of the night. 7. The interior of the corollas of 
plants do not evolve ozone. 8. Inhabited rooms do not 
usually contain ozonized oxygen. 
Oxygenized Water. —M. Chevreul finds that this pre¬ 
paration destroys colours of an organic origin, just as chlorine 
does, but more slowly. 
Analysis of Air —In his pamphlet on ^ Air and Water,’ 
Mr. Condy points out the facility with which air may be 
tested for organic impurities by placing in the required spot 
four or more small white saucers, each containing an ounce 
of distilled water, and severally one, two, three, four, or more 
drops of his Patent Ozonized Water, or Disinfecting Fluid, 
reduced by addition of two parts of w'ater. The rate at which 
the pink colour of the permanganate disappears, indicates the 
proportion of impurity present. If during a night or day the 
colour vanishes in the saucer containing four drops, he states 
that the impurity verges on positive pollution. 
The Meeting of the Royal Agricultural Society 
FOR 1863.—It has been announced that the next meeting 
of the Royal Agricultural Society will be held at Worcester, 
and that the time has been arranged for the week com¬ 
mencing July 20. The site selected for the exhibition is 
in the immediate vicinity of Worcester, on the Battenhall 
property, belonging to Sir Thomas Sebright. The ground 
selected for the show-yard has all been levelled and 
drained. The extent is thirty-nine acres. The fields for 
ploughing, reaping, mowing, and other agricultural opera¬ 
tions, which are near at hand, measure together above 100 
acres more. A branch will be run out of the West Midland 
Railway, which passes near, into the show ground. The 
amount subscribed by Worcestershire for the necessary ex¬ 
penses of the meeting is j 0472O. The special prizes given by 
the local authorities are not yet arranged. 
