308 



Proper Depth for Grass Seeds and Clovers. 



ceous plants. The first row will contain hardy heaths, low vacciniums, and 

 other ericaceous plants, daphnes, &c., which do not rise above 9 in., of which 

 there are upwards of a hundred species and varieties purchasable in the 

 London nurseries. 



The outer bed of shrubs should be planted with taller-growing kinds, chiefly 

 showy rhododendrons and azaleas, kalmias, mahonias, &c. 



In both the lines of beds of shrubs care should be taken to distribute the 

 evergreens and the variegated-leaved plants with some degree of regularity 

 among the others j and the same care ought to be taken in distributing the 

 herbaceous plants. Among the latter there are certain white-leaved plants, 

 such as cerastium, some varieties of auricula, some species of gnaphalium, &c., 

 which ought to be equally distributed : and the same care ought to be had with 

 respect to glaucous and grass-leaved plants, such as the garden pink; and ever- 

 green plants, such as the sweetwilliam, the wallflower, &c. 



In planting such a garden, whether with flowers or shrubs, it must 

 always be borne in mind that the garden constitutes a regular formal figure, 

 and that the principle of regularity must be maintained throughout. Every 

 herbaceous plant and shrub must be pruned and trained, and taken up and 

 reduced when necessary ; so as to form a circle in the plan, and a dome, or 

 semi-globe, or a cone more or less blunt, in the elevation. The lines of beds 

 next the walk, whether of herbaceous plants or shrubs, will be composed of 

 semi-globes or flattened domes ; the herbaceous plants in the second row of 

 somewhat pointed domes, the diameter of the base being 18 in., and the highest 

 point of the elevation 2 ft. ; while the herbaceous plants in the third row, 

 and the shrubs in the second row, will be trained so as to form sugar-loaf or 

 blunt conical shapes. 



To plant such a garden as this botanically, keeping all the species of a 

 genus together, would render it disagreeable even to the commonest observer, 

 because there would be no obvious relation between the mind displayed in 

 laying out the beds and that employed in planting them, between the designer 

 and the executer, the artist and the artisan. 



( To he continued.) 



Art. V. Residt of a7i Experiment made by Messrs. W. Drimimond 

 and Sons to sJiow the proper Depth of Covering for Grass Seeds 

 and Clovers. Communicated by Messrs. Drummond. 



The following seeds were sown on the 13th of May, 1842, on an open border 

 of light soil, the covering regulated by a frame standing 3 in. in depth at a b, 

 and level with the surface at c d, the border 4ft. wide: the white dots show 

 where the seeds have brairded, and the proportionate thickness of the plants 

 in the diflTerent depths ; thus proving to a certainty the great loss sustained 

 by the ordinary mode of covering, or rather burying, the seeds. 



1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 



Fig. 74. Diagram showing the Growth of Grass Seeds sown at different Depths. 



