June 1891.] BOTANICAL SOCIETY OF EDINBURGH. 



149 



Ardoinii, Erica ausiralis, Daphne cneorum, D. Fioniana, 

 Gentiana verna, Dianthus glacialis, Narcissus triandrus pid- 

 chellus, Olearia Gunniana, Petrocallis pyrcnaica, Onosma 

 tauricum, Primula grandis, P. integrifolia, P. viscosa, Roman- 

 zojffia stitchensis, Stylopliorum japonicum, Ti'ichonema rosea, 

 Trillium grandiflorum, Vella pseudo-ci/tisus, and others. 



Readings of exposed Thermometers at the Rock-Garden of the 

 Royal Botanic Garden, Edinburgh, during May 1891. 



1-80 inches in 1891. 

 3-40 „ 



Dr David Christison, who was unavoidably absent from 

 the meeting, sent the following note : — 



" Perhaps, in connection with the Monthly Report on Tempera- 

 ture and Vegetation, it may interest the Society to know that in 

 this extraordinary season there has been a great diminution in the 

 girth-increase of the trees measured by me in the Botanic Garden. 

 " The aggregate increase of twenty-eight young deciduous trees 

 till the end of May was, . 

 Average of previous four years, 

 Aggregate increase of thirty-one young 



Conifers was, . . . . . 3 65 „ 

 Average of previous four years, . . 6*73 „ 

 " Thus the amount was little more than half the average of the 

 previous four years, both in the deciduous and evergreen groups. 



" I may add, that while in each of the previous four years there 

 was an appreciable increase in girth in April, amounting in the 

 aggregate to about half an inch in the deciduous trees and one inch 

 and a quarter in the Conifers, there was no increase in either 

 group in April 1891." 



