44 NOTES ON TREES. 
not grow with quite the graceful luxuriance it develops in more 
southern climes, it does very well. The only large specimen I 
have seen in this district is at Kirkconnell, Troqueer, a tree 
about 60 or 70 feet high, with a girth of 9 feet 8 inches; but I 
have one at Terregles Banks, planted in 1884, thriving well, and 
there are several about Terregles. It is specially suited for 
planting in towns from its shedding its bark, and so resisting 
smoke. 
Dr Borthwick said that in addition to that ordinary ash 
canker, there was only one tree he had ever examined which 
was evidently suffering from a disease that formed no particular 
signs outside, but, on examining it at any time of the year, either 
with root wood, twigs, or leaves, wherever there were living cells, 
there he found some kind of organism in active movement. 
Whether it was a bacterium or not he could not say. Possibly 
that cause may have had to do with the case referred to by Mr 
Maxwell. 
Mr Wellwood Maxwell of Kirkennan asked if the ash in 
question had anything apparent on the bark to indicate the 
disease. The bark of a healthy young ash was clean, but one 
sometimes saw an appearance like a scale on an apple tree. 
Was that present in this case? 
Dr Borthwick said he knew the white scale, or insect scale, 
referred to, and he could not say whether it was present or not, 
but the bark had not a healthy appearance, and that was what 
led him to examine the tree first. The growth, too, had ceased, 
and another conspicuous point was the way in which it lost its 
leaves very early in the year, and also portions of the twigs fell 
with the leaves. 
Mr Maxwell, Terregles Banks, in reply to the Chairman, 
said regarding the value of the grandis that the timber of these 
silver firs was much of the same order as their own silver fir. 
THE JAPANESE LarcH. By Mr W. Murray of Murraythwaite. 
Mr W. Murray gave a note on the Japanese Larch. It had 
to do with a cover which had already been brought before the 
Society in recent years. It was a cover of about four or five 
acres planted in 1899, the trees at the time being of the age of 
three years. He had had it measured fairly well, and found that 
