74 TRANSACTIONS OF ROYAL SCOTTISH AkbORlCULTURAL SOCIETY. 



the usual Phomopsis type ; they consist of pycnidia which are 

 partially divided up by incomplete septa and possess a short, 

 rather wide neck with a terminal opening. The spores are 

 borne on distinct sporophores and measure 7-8 x 3-4 /a. 



"The depressed appearance is due to the non-development 

 of the xylem in the infected areas during the present year. 

 In these the cambial cells are discoloured and partly dis- 

 integrated ; the phloem and cortex appear to be still living, but 

 are devoid of starch and are permeated in all directions by 

 hy|)hae. The infected tissue is limited by a layer of periderm, 

 and beyond this the cambium is normal and has developed a 

 zone of secondary xylem during the present year. The phloem 

 and cortex in the healthy tissue are normal, and the cells of the 

 latter are packed with starch. 



"This is the first record of Phomopsis Pseudotsugae on Larix 

 leptolepis, and it is a fact not only of scientific interest but of 

 great practical importance. Opportunity may be taken -here to 

 record the occurrence of this fungus on a third host. It was 

 found during May of this year on the dead leading shoots of 

 young trees of Tsuga albertiana in Fifeshire. It is noteworthy 

 that both on the Japanese larch and on Tsuga albertiana the 

 spores agree exactly, both in shape and size, with those of the 

 fungus on the Douglas fir, and hence diff"er markedly from those 

 of Phomopsis abietina on the Abies pectinata described by Hartig. 



" It is proposed to give a further account of the fungus on 

 these two new hosts as soon as additional material is available." 



The Museum of British Forestry at Kev^^. 



A suggestion has been made that a short account of the 

 Forestry Museum in the Royal Botanic Gardens, Kew, would 

 be of interest to readers of the Transactions of the Royal 

 Scottish Arboricultural Society, therefore the following notes 

 have been prepared. 



The Museum is the outcome of a wish expressed by 

 H.M. King Edward VII., and it occupies a building which was 

 formerly the residence of H.R.H. The Duke of Cambridge. It 

 is situated about three minutes walk from the main entrance to 

 the gardens, and was opened to the public in 1910, although 

 at that time in its infancy and containing few exhibits. There 



