RED ELZENHOUT 



of the same colour as the soft-tissue. The rings are faint loops 

 or bands of slightly larger pores : rather indefinite. 



Type specimens from commercial sources and also authenti- 

 cated by Romeyn B. Hough. 



No. 93. CANADIAN CHERRY. Prunus emar- 

 ginata. Walp. 



PLATE VII. FIG. 60. 



Natural Order. Rosaceae. 



Synonym. Cerasus emarginata. Dougl. 



Sources of Supply. United States of America, British Colum- 

 bia. 



Physical Characters, etc. Recorded dry-weight, 35 i Ibs. per 

 cu. ft. Hardness Grade 6, compare Beech. Taste or smell none. 

 Burns well : embers glow in still air : a copious yellow juice is 

 expelled by heat. Solution colourless : the alcoholic solution 

 yields a slight ppt., with potash. Surface lustrous, especially 

 in radial section. 



Grain. Fine, open and straight. 



Bark. ? 



Authorities. Macoun (66), p. 125. Sargent (100), p. 67. 



Colour. Heart-wood brownish : uniform. Sap-wood ? 



Anatomical Characters. As those of Prunus serotina, No. 92, 

 with the following variations : 



Pore-ring. Not a single line and not sharply marked off 

 from the later pores : no red gum anywhere. 



Rays. Only just visible to good sight : size 5, and 5-6 per 

 sq. mm. : tapering very little : a trifle lighter in colour than the 

 ground. 



Radial Section. Rings clearly traceable : rays lustrous, 

 especially when weathered, but there is little contrast of colour. 



Tangential Section. The rays are not visible with the lens in 

 the solid section except when moistened. 



Type specimen authenticated by Hough. 



No. 94. RED ELZENHOUT. Cunoma capensis. 



Linn. 



PLATE VII. FIG. 62. 



Natural Order. Saxifrageae. 



Alternative Names. Red Alder : Red Els : Rood Els or Elze : 

 Red Cedar (59) : Umgwasube (61). 



Source of Supply. South Africa. 



Physical Characters, etc. Recorded dry-weight, about 46$ 

 Ibs. per cu. ft. Hardness Grade 2, compare Boxwood. Smell 



109 



