Mr Sadler's Report on Open- Air Vegetation. 373 



Primula vulgaris (double white). 



„ „ rubra. 



Corydalis cava. 



„ bulbosa rubra. 



Polygala Chairicebuxus. 

 Erica herbacea. 



„ carnea alba. 

 Mandragora vernalis. 

 Iberis petrrea. 

 Dondia epipactis. 

 Soldanella montaiia. 

 Vinca minor. 

 Saxifraga oppositifolia. 



„ alba. 



„ aretioides. 



Erythronium dens canis. 



„ grandifloruni. 



Cyclamen Coum vernum. 

 Corbularia sp. (Maw). 

 Ornithogalum sp. (Maw). 

 Gagea lutea. 

 Scilla sibirica. 

 prsecox. 

 bifolia. 



„ taurica. 

 „ rubra. 

 „ alba. 

 Puschkinia scilloides. 

 Bulbocodium vernum. 



In April the thermometer was at or below the freezing- 

 point on six occasions ; it had been on twenty-one during 

 the same month last year. The lowest temperatures were 

 on the following dates :— 8th, 32°; 10th, 27°; 12th, 29°; 

 13th, 31°; 16th, 26°; 27th, 28°. The frosts of this month, 

 owing to the advanced condition of vegetation, did much 

 injury to fruit trees and bushes in flower, as well as to 

 tender shoots in many parts of the country. 



During this month 231 species and varieties of plants 

 came into flower in the rock garden, as compared with 52 

 in April last year. 



In the early part of May, though the thermometer did 

 not fall to the freezing-point, yet the night temperatures 

 were very low, as shown by the following readings : — 1st, 

 34°; 2nd, 39°; 3rd, 35°; 6th, 34°; 7th, 36°; 8th, 33°; 9th, 

 34°; 10th, 35°. On the 4th, 5th, and 11th the thermometer 

 registered 43°. 



On the 11th of the month 346 species and varieties were 

 in flower on the rock garden, as compared with 158 at the 

 same date last year. 



June 1882. — The lowest readings of the thermometer 

 during the month were on the 1st, 41°; 2nd, 41°; 11th, 37°; 

 12th, 38°; 16th, 35°; 17th, 35°. 



Since the last month 173 species and varieties of plants 

 came into flower in the rock garden, making a total of 666 

 for the season, as compared with 484 at the corresponding 

 date last year (1881). Amongst them were the follow- 



mo- 



