25 i 



Observations upon the effects of Frost, 



Finally, the Mandarin Orange has been living uninjured for 

 three years. 



Pinus sinensis, supposed to be the only one in the country, had 

 stood out of doors 20 years at Redleaf, was 14 or 15 feet 

 high, and was quite killed. 



Pittosporum Tobira was generally killed near London. At 

 Sketty, since 1813-4, several shrubs had remained uninjured by 

 the frost till last winter, when they did not suffer more than 

 some common evergreens, which grew beside them, and one of 

 them came freely into flower. Mr. Dillwyn states, that in 

 the scale of injury it may be placed with Arbutus Unedo, 

 and that it has suffered much less than Aristotelia Macqui. 

 In Cornwall this is a common shrub ; several plants at Car- 

 clew were split from top to bottom and killed ; others had 

 their last years shoots killed, and only a few, which happened 

 to be protected by higher shrubs, escaped. At Falmouth it 

 did not suffer. 



Roses. Of the Banksian Rose, both the yellow and white variety 

 suffered severely in all the northern parts of England ; at 

 Claremont, plants 15 years old, and covering 60 or 70 yards 

 of wall, were killed to the ground ; fine old specimens pe- 

 rished in the Society's Garden ; at Brenchley, a plant with a 

 stem lly inches in circumference, and covering the whole side 

 of a house, was entirely destroyed ; they equally perished in 

 Hampshire, but it was observed at Owston that one plant 

 against a shaded wall escaped. The varieties of Rosa multi- 

 flora were destroyed. Rosa bracteata, the Macartney Rose, 

 was killed back to its old wood, or even down to the ground. 

 R. microphylla suffered in the same degree ; other China Roses 

 in general were killed to the ground, or totally destroyed. 

 The white and yellow China Rose, the sweet scented hybrid, 

 Hamon, and Blairii, were entirely destroyed even in Hamp- 

 shire ; but the latter was injured on a south wall at Drop- 



