Nov. 1893.] BOTANICAL SOCIETY OF EDINBURGH. 



Readings of exposed Thermometers at the Rock-Garden. 



SEPTEMBER. 



The month of September was cool and unsettled, with 

 heavy falls of rain. The first frost this season took place 

 on the 11th of the month, when the thermometer registered 

 32°, which was repeated on the 23rd. The lowest day 

 temperature was 50°, on the 23rd, and the highest 72', on 

 the 2nd of the month. 



Most herbaceous plants flowered very well during the 

 month ; strawberries and Gentiana acaulis were observed 

 in Hower for the second time during this month, as were 

 also laburnums and rhododendrons. Autumn tints began 

 to show early in the month, and were most effective on. 

 Pavia flava, lime-tree, horse-chestnut, and Ghent azaleas. 



On the rock-garden a large number of plants were in 

 flower, but only 28 came into flower in September, as 

 against 45 for the corresponding month last year, a few 

 of the most interesting being: — Adlumia cirrhosa, Aster 

 Strachcyi, Colchicuni maximum, Crocus annulatus, C. mcdiiis, 

 C. Sahmanni, JDianthus Scgnicrii, Erica Mackiana, E. 

 Stuartii, Fvclisia sanguinca, Gratiola officinalis, Potcntilla 

 Mooniana, Polygonum capitatum, Tcticrium fiavum, Thymus 

 striatus, Xnipho/ia nohilis, K. Saundersii, Scdum Faharia, S. 

 spectdbilis. 



