Transactions of the Prussian Gardening Society. 595 



cow-dung is laid on the top of the soil every year as manure. 

 The trees are pruned in September in preference to the 

 pruning in spring, by which three or four weeks are lost in 

 their growth. 



30. Gledttschia, horrida recommended Jbr Enclosures. 

 Young plants should be planted, one foot apart, in well- 

 trenched soil. The first year they should be shortened to 

 eight or twelve inches ; in the second year to eighteen or 

 twenty-four inches; and so on gradually to the height re- 

 quired. The lateral branches, if not required to fill up 

 vacancies, are shortened to six inches. The hedge should 

 be kept clean, and occasionally watered when newly planted. 



31. Description of afioinering Zamia horrida at Cassel. 

 By M. Schelhas. 



This plant flowered in the year 1827} and proved to be a 

 male, the anthers of which are sessile on the under side of 

 the scales. 



33. Report on grafting Pears on Sorbus aucuparia. By M. Floss. 

 These trees grow on sandy soil, where pear trees do not 

 prosper, which induced M. Floss to graft them with pears, 

 in which he succeeded perfectly. He observed further, that 

 one or two branches of the stock should be left, to hinder 

 the graft from growing too rapidly, because in that case the 

 graft grows much thicker than the stock, and is easily broken 

 by the wind ; but when branches of the stock are allowed to 

 remain for two or three years, this does not happen. He also 

 observed that the pears obtained from trees treated in this 

 manner seem to keep longer, although they are not so well 

 flavoured as when grafted on the wild pear stocks. 



39. Description of a Method of gromng Alpine Plants j used in the 

 Garden of Dr. Wild, at Cassel. 



. On a site of 8000 square feet he cultivates about 700 dif- 

 ferent alpine and forest plants. In five of the beds a stratum 

 of gravel is laid at the bottom, which is covered about 2 ft. in 

 thickness with peat. The rockwork is also planted with alpine 

 plants. The clumps in some places are planted with various 

 evergreen shrubs, and surrounded by an edging of Geniid7ia 

 acaulis, Veronica fruticulosa, &c. The uppermost clump is 

 27 ft. higher than the lowest ; and from that elevated situation 

 the neighbouring country may be seen to great advantage. 

 This communication is followed by a list of plants cultivated 

 in the garden. 



Q a 2 



