294 METEOROLOGICAL OBSERVATIONS. 
of which the last written — 0-162278, which is correct for ,/10 
except the final figure which should be 7. 
He does not give any method of determining the limits of the 
error of any convergent, without which the process is of little prac- 
tical use. J. B.C. 
_ ABSTRACT OF METEOROLOGICAL OBSERVATIONS, FOR 
THE YEARS 1861 & 1862, TAKEN AT STRATFORD, 
CANADA WEST. 
BY CHARLES JOHN MACGREGOR, M.A. 
Havine been engaged, in my capacity of head master of the 
Grammar School, Stratford, in taking the observations required by 
law to be made at each county town in Upper Canada, I have thought 
that it would not be uninteresting to the members of the Institute, if 
I should lay before them the results of these observations for the 
years 1861 and 1862. I am induced to do so from the fact of having 
observed, in various numbers of the valuable Journal issued by the 
Canadian Institute, a notice calling on the members generally to fur- 
nish reports of any phenomena that may fall under their observation. 
The instruments used were supplied by the Chief Superintendent of 
Education, and were, I believe, tested at the Provincial Observatory 
prior to their distribution to the schools. They consist of a baro- 
meter, dry and wet bulb hygrometer, maximum and minimum self- 
registering thermometers, rain gauge, and wind vane. The means 
are reduced from tri-daily observations taken at 7 a.m., | p.m., and 
9p.m. The self-registering thermometers are read at 9 p.m. each 
day. No observations are taken on Sunday. The thermometers are 
fixed in position in a shed attached to the Grammar School building, 
which protects them from being unduly influenced by radiation and 
the direct force of the wind. ' 
An approximation made by means of the levels taken on the line of 
the Grand Trunk Railway, kindly furnished me by an engineer of the 
company, gives the height of Stratford above Lake Ontario at To- 
ronto, as 948 feet, which will consequently make it 1182 feet above 
the sea level. 
