IIOOKEE, BOOTHIAN PLANTS. 



529 



which was always greater than the average quantity over tlie Jand. 

 On the 17th January 1859, a tube was placed 1 foot 1 inch 

 deep in a mixture of shingle and earth ; in this a thermometer 

 was placed. The position of the ground was such that scarcely 

 any snow lay upon it, the constant strong winds removing it 

 almost as soon as deposited. 



Column 4 gives the register of this thermometer. 



February 12th 1859. — A tube was placed horizontally on the 

 surface of the ground beneath the snow lying over the place 

 where thermometer No. 1 was sunk, and the temperature as 

 shown by this thermometer (column 5) was registered until all 

 the snow disappeared. Column 6 gives the mean temperature of 

 the air for the day on which the registers of the diflferent thermo- 

 meters were taken. 



Column 7 gives the mean temperature of the air for the number 

 of days or hours intervening between the registering of the 

 thermometers. 



All the registers of the different thermometers are corrected so 

 as to reduce them to that of the standard. 





Thermo- 



Depth 



of 

 snow. 



Thermo- 



Temp, of 



Mean of 



Mean of 





Date. 



meter 



buried 



2 ft. 2 in. 



meter 



buried 



1 it. 1 in. 



surface 

 below 

 snow. 



days of 

 observa- 

 tion. 



air from 



that of 



intervals. 



Ross. 



1858. 





ft. in. 













September - 



+ 30-9 



— 



— 



— 



+25-0 



+ 24-5 



+ 25 



October 



+ 24-4 



6 



— 



— 



-9-6 



-8-4 



-9 



November ■ 



+ 15*8 



4 



— 



— 



-12-0 



-13-6 



-9 



December - 



+ 12-0 



4 5 



— 



— 



-34-9 



-33-7 



-16 



1859. 

















January- 



+ 6-2 



5 8 



-21-5 



— 



-34-0 



-33-4 



-26 



February - 



+ 2-3 



5 8 



-24-8 



-3 



-32-7 



-34-8 



-32 



March - - - 



+ 0-7 



6 



-16-7 



-3-8 



-19-9 



-17-4 



-27 



April - 



+1-6 



6 6 



-8-1 



+ 0-7 



-1-6 



-5-4 



-3 



May - - - 



+ 3-5 



6 



+ 8-1 



+ 4-9 



+16-4 



+ 14-4 



+ 14 



June - 



+ 7-5 



3 6 



+ 27-3 



+ 26-0 



+ 34-2 



+ 35-0 



+34 



July - - - 



+ 31-7 







+ 39-0 





+40-7 



+39-9 



+36 



August 



P+40-0 



?0 



p 





? +30 



+ 28-0 



+ 25 



Mean - 



+14-7 



- 



- 



- 



+1-8 



+ 1-0 



+ 2-5 



LXXIX. — On some Akctic Diatomace^, collected during 

 the voyage of the "Fox." By the Rev. Eugene 

 O'Meara. (By Permission, from the Journal Royal 

 Dublin Soc, vol. iii. pp. 59-60, 1860.) 



In this account of Diatomacea3 found amongst mixed sediments 

 of bottles in which larger specimens had been brought home from 

 various Arctic localities, namely, Port Kennedy, long. 94° W., 

 lat. 72" N., Bellot Strait, Brentford Bay, off the Crimson Clifft?, 



3G122. L L 



