Mr Sadler's Heport on Open- Air Veyctation. 127 



of ari3''thing like drenching rains checked vegetation con- 

 siderably. During the month the rock garden was very 

 attractive owing to the numerous alpine and herbaceous 

 plants in flower. These included Erigeron lloyUi, E. 

 alpinus. Many species and varieties of Saxifraga, Gen- 

 tiana Andreivsi, Dryas octopeiala, Meconopsis nepalensis, 

 Primula japonica, Senecio speciosa, Potentilla sikkimensis, P. 

 aurea, Bamonclia pyrenaica, Papaver alpinwn, Auhrictia 

 olympica, Cldorogalum Leiclitlini, Ruhus arcticus. 



June 1880. — During this month the thermometer did not 

 fall so low as the freezing point at the Botanic G-arden, al- 

 though it fell several degrees below it in some districts of 

 Scotland. The five lowest morning temperatures were on 

 the 5th, 9th, 10th, 11th, and 12th, indicating 37°, 35°, 37°, 

 35°, 39°; while the highest day temperatures were on the 2d, 

 3d, 11th, 15th, and 18th, indicating 68°, 70°, 64°, 73°, and 

 67°. In the early part of the month there were bright sun- 

 shine ; cold, dry, easterly and northerly winds, with very 

 little rain. About the middle of the month there were 

 cold mists and fogs, while, towards the end of the month, 

 there were heavy showers of rain, with west and south- 

 west, moist, warm winds, and bright sunshine, which gave 

 a great stimulus to vegetation. Though the weather at 

 the end of May and begirniing of June was not conducive 

 to luxuriant growth, it was very favourable for the ripen- 

 ing of spring herbaceous plants, and especially of bulbs. 

 Many trees and shrubs have produced few flowers this 

 season, — such as Hawthorns, Lilac, Horse-Chestnut, &c. 



July 1880. — During the month the 4 lowest tempera- 

 tures registered were on the 9th, 42° ; 11th, 43° ; 12th, 42°; 

 21st, 42°. The highest morning temperatures were on the 

 2d, 55° ; 6th, 54° ; 24tli, 53° ; 29th, 53°. In the begin- 

 ning of the month there were heavy rains, with frequent 

 thunderstorms. Nevertheless, the weather was warm, with 

 bright sunny days and westerly winds. About the middle 

 of the month the weather was calm, with occasional hot 

 sunshine, heavy showers, and easterly breezes ; while to- 

 wards the end of the month there was bright sunshine, 

 with occasional showers and stiff breezes from the south- 

 west and north-west. Among the more conspicuous 

 plants which came into flcjwer in the rock garden during 



