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two columns, one embodying the N. and E., the other the 
S and W.; and beyond all question it appears that as the S. 
and W. winds increase, so also does the amount of ozone. 
My opinion for the decrease of ozone with the N. and E. 
winds in the west part of this country is that there is less 
sea on the east coasts than on the west, and consequently 
less means for ozone development; though I have no doubt 
that much more ozone will be developed on the east coasts 
of the country by the east winds than we in the west 
obtain from them. The ground and animal and vegetable 
organisations which are situated towards the east, will 
absorb most of the ozone developed in and by the east winds 
before it reaches the west of the island. 
MICROSCOPICAL AND NATURAL HISTORY SECTION. 
April 26th, 1869. 
J. JB. Dancer, Esq., F.R.A.S., President of the Section, 
in the Chair. 
Mr. Thomas H. Nevill and Mr. Spencer Bickham, jun., 
were appointed to audit the Treasurer's Account for the 
past year. 
Mr. Dancer stated that he had received from Mr. Richard 
Dale, Cornbrook, some Hsematoxylin — the source of the 
colouring properties of logwood. From the appearance of 
the crystals Mr. Dale expected they would form a polarising 
object, and Mr. Dancer found that opinion to be correct. 
Mounted slides of the crystals from an alcoholic solution 
