TRANSPLANTING. 69 



The birch requires rather a peculiar mode of treat- 

 ment. Its seeds must be either trodden in with the 

 feet, or rolled with a heavy stone-roller. As they 

 must not be covered above a tenth of an inch deep, 

 the hollowing out of the alleys, without any coffing, 

 produces as much earth as is necessary for the pur- 

 pose. In pretty moist land, I have seen birch-seed 

 come up very well without any covering at all. The 

 proper season for sowing them is about the latter 

 end of April. 



The alder should be slightly covered, like the 

 birch, and sown about the same time. 



The berries of the mountain ash, if sown in au- 

 tumn, when they are gathered from the trees, will 

 come up partly the spring next ensuing, and partly 

 the following one. They may be covered an inch 

 deep. 



Laburnums may be sown any time during the 

 month of April, and covered to the depth of half an 

 inch. 



