TegetaUe Productions of the Hudson'' s Bay Countries. ‘"£01 
"it was obtained from a comparison of the mean annual tempera- 
^ tures of Cumberland House and Fort Enterprize, which are 
10| degrees of latitude apart. The observations for the other 
months in the Cumberland House column, were made within the 
stockade of the fort, and a deduction of 1° has been made from 
oach recorded observation, to compensate for the radiation from 
the neighbouring buildings, an allowance which corresponded 
with the few observations we made upon the subject. The means 
for some of the months were deduced from three or more obser- 
vations each day, taking into account foe length of the intervals. 
In the rest of the months, foe means of the extremes have been 
used, which differ only in a fraction of a degree from the more 
correct mode of taking the intervals into account. 
The temperatures in the column for Lat, 64° were (except 
those for the latter end of June, the month of July, and the 
beginning of August,) taken at Fort Enterprize, in a shaded si- 
tuation, on a northerly exposure, and not subject to any mate- 
rial radiation from warm buildings, and an addition of 0°.5 has 
been made to the registered temperatures, as a reduction to 
Lat. 64°; Fort Enterprize being actually £8 miles north of 
that latitude. The temperatures for July, and the early part 
of August, in this -column, having been observed during the 
journey from the parallel of55J°, an allowance of from 1°.5 to 
to 1°.8 has been deductefofor each degree of latitude, according 
to the situations of the places of observation. The temperatures 
for June, after the' 10th, were taken in Lat. 65°, and have there- 
fore been corrected for Lat. 64° by an addition of 1°.5 Fahr. 
'With regard to the temperatures in the three remaining co- 
lumns, Captain Parry observes, that the thermometer, when 
placed on the foore, or on the ice, at a distance from the ship, 
invariably stood from S° to 4° or 5°, and on some occasions 7° 
lower than the temperature registered on board and he in 
consequence deducts 3° from the mean temperature for the year. 
.In the above table an attempt has been made to proportion the 
compensation for the warm atmosphere of the ships, amongst 
the months, so that the greater allowance is made when the dif- 
ference of temperature between the atmosphere and ship was 
greatest, or, in other words, in the coldest months. Thus, in 
July and August, when the radiation of foe earth is supposed to 
