Will. 



THE FLORA OF HALIFAX. 



thermometer with those of the maximum and minimum 

 thermometers, all being in the shade. Those of earlier 

 date have been previously published in " Eight Years' Meteor- 

 ology of Halifax, being a Record of Observations taken at 

 Well Head during the years [866 to [873 inclusive," by John 

 Waterhouse, F.R.S., F.R.A.S., F.G.S., &c. The later read- 

 ings are by Mr. J. Whiteley, the librarian at Belle Vue, where 

 the corporation has maintained a meteorological station since 

 1892. As in neither case have the observations been continued 

 for a sufficiently long period to arrive at a true average, it is 

 desirable to make use of both ; and as the stations differ some- 

 what in altitude, and yield different averages, it is undesirable 

 to combine the readings. 



Monthly Mean Temperature in the Shade. 



(June— Aug.) 



The yearly average for places in Yorkshire near the sea level 

 is 48 or 4.8 .5, and the local observations are in close accord- 

 ance with the generally accepted conclusion of Dalton, that the 

 mean temperature falls one degree for every hundred yards 

 ascent above sea-level. As the elevation of the parish ranges 

 from 200 ft. to 1500 ft., there is probably a difference of five 

 degrees in the mean temperature of the valley bottom and the 

 moors. If records were available they would probably show 



