December, 1888, the temperature of air and water was nearly the same, 

 viz : 4.3°, the wind at the time was W.S.W., and the weather clear and 

 fine. It was the same on the 24th December. The greatest difference 

 in the temperature of air and water was on the 25th, (Xmas Day) when 

 that of the air was 35°, and of the water 44».3. 



On the 1st January, 1889, the difference is more remarkable, viz: 

 air 30°. 6, water 40°, and the same was the case on the day following, viz: 

 air 29°, water 38<>.5, with the wind IS^.E., and weather fine. 



A sudden rise of temperature occurred on the 8th January, when 

 that of the air was 39°.8, and of the water 38°.2, somewhat colder than 

 the air, the wind south, and the weather fine. The same was the case 

 the day following, viz : air 45", water 41°.5. 



As a rule, the temperature of the water does not increase so rapidly 

 as that of the air. On the 5th May for instance, the air was 69°, and the 

 water 57°.2 ; the same on May 9th, viz : air 62", water 57°. 



In February, with snow on the ground, the temperature of the air 

 varied from 25°.8, to 34°.8, and that of the water from 34°.6, to 39°.5, 

 the wind at the time being E. to N.E. Speaking generally, it is observed 

 that with the wind S. or S.W., and rain falling, the temperature of air 

 and water differ only one or two degrees. 



The above remarks refer to observations taken up to 15th May, 

 1889. In the same month the temperature of the air rose considerably, 

 the highest being on the 29th, when it was 69°.8, while that of water 

 was only 60«, the wind being S.W., and weather fine. 



Towards the end of May the temperature of air and water once 

 more approximated. On the 2nd June there was a sudden and consider- 

 able rise in the air temperature, but only a moderate rise in that of water, 

 the difference betw^een them being 14°, with the wind as above, this again 

 shewiag that the water temperatiire rises slower than that of the air. 



On the 10th June, with a N.N.E. gale blowing, the temperature of 

 the air fell to 53°, while that of the water was 550.2. As a general rule 

 the water temperature was below that of the air throughout this month. 

 The last-mentioned is, in fact, the only instance to the contrary. 



On the 20th June the thermometer in use was accidentally broken, 

 and it was not until the 19th September that a new one of similar 

 construction arrived from Edinburgh. Meanwhile an ordinary instrument 

 was supplied to Mr. Dean, and with it Ihe observations were taken, 

 recorded in the above interval. 



The readings of this instrument, and that subsc(;[uently supplied 

 from Edinburgh, were found to agree very fairly, and the results of the 

 observations taken during the interval, shew, as might have been expected, 

 that the air temperature is above that of water throughout the summer 

 months, June, July, and August, with one single exception, viz : on the 

 23rd August, when the air was one degree colder than the water, with 

 the wind N.W., and weather fine. 



