Mar. 1892.] THE BOTANICAL SOCIETY OF EDINBURGH. 337 



On Temperature and Vegetation in the Eoyal Botanic 

 Garden, Edinburgh, during February 1892. By Egbert 

 Lindsay, Curator of the Garden. 



During February the thermometer was at or below the 

 freezing point on twenty occasions, indicating collectively 114° 

 of fi'ost for the month as against 79° for the corresponding 

 month last year. The lowest reading occurred on the 19th, 

 when the thermometer went down to 7°, or 25° of frost. 

 This is the lowest reading that has occurred at the garden 

 since December 1882. From various districts in Scotland 

 several degrees below zero were registered on the 19th. For- 

 tunately, the ground was well covered with snow, which 

 afforded great protection to dwarf-growing plants during this 

 severe frost. Other low readings occurred on the 16th, 20°, 

 17th, 19°, 18th, 23°, 20th, 15°. The lowest day temperature 

 was 33°, on the 16th, and the highest 54°, on the 9th. Snow 

 began to fall on the 15th, and frequent heavy falls took 

 place till the 21st, which did not disappear until near the 

 end of the month. 



A good many plants have been more or less injured by 

 the severe frost. Amongst those which have suffered most are 

 various species of Japanese Bamboos, Xew Zealand Veronicas, 

 Olea ilicifolia, Golden Holly, &c. Rhododendron Nohleanum 

 and B. pra'cox have had their flower-buds destroyed. The 

 following spring-flowering plants annually recorded to the 

 Society came into flower in February, viz., Galanthus nivalis 

 on the 2nd, Eranthis hyemalu on the 6th, Lcucojum vernum 

 9th, Tmsilago fragrcms 9th, Dondia Epipactis 10th, Rhodo- 

 dendron atrovircns 10th, Crocus Susianus 12th, Bidhocodiurn 

 vernum 12th, Seilla sibirica and S. 2^'>'cccox 12th, Corylus 

 Avellana 12th, Symplocarpus fcetidus 23rd, Daphne. Mezereum 

 24th. 



On the rock-garden 'M species and varieties came into 

 flower during the month, the most interesting being Crocus 

 Impcrati, C, Olivieri, Hyacinthus azureus, Leucojurii carpaticum, 

 Colchicmn crociflorurii, Helleborus ahschasicics, H. olympicura, 

 Narcissus minimus, Saxifraga Burseriana, S. imhricata, Galan- 

 thus Imperati, and G. Redoutei. 



