Forfign Kuticcn: — Germany. 91 



■ A letter iVom tlie Royal Swedish Academy ot" Agriculture at Stotkholui, 

 wliicli, in coniinunicating the Transactions ot" the academy j)ublished up to 

 that time, announced its readiness to form a closer connection with the 

 Society, in order to effect, in connnon, the object of" both. 



A letter of the same purport from the Westphalian Society for cultiva- 

 tion, establish etl at Minden. 



A treatise b}' Burgomaster Borggreve, of Bevergern, upon the ravages of 

 the larvae of the cabbage gnat (T'ipula oleracea), and more especially of a 

 fly (Anthomyia brassicae) which frequents plants of the cabbage genus, 

 particularly the cauliflower, and the means of prevention. For this piu*- 

 pose, the author, after careful experiments, recommends, among other 

 things, the sifting of a mixture consisting of two thii'ds soot and one thu'd 

 earth over the seed ; the sowing of the cauliflower on a bed which had been 

 thickly covered in the preceding autumn with dill ; the encircling, on trans- 

 planting, as soon as the plant begins to shoot up, the upper part of the root 

 with a coat of well kneaded loam ; the planting deeply, to the head, and 

 surrounding the plant with moss, heaping up the earth around it. Here 

 Borggreve also confirms, by experience, the good effect of sprinkling pul- 

 verised charcoal over beds destined for onion seed. The mixing of char- 

 coal powder with the supei-ficial mould, to protect bulbous roots against 

 the larvae of a fly (Anthomyia ceparum), has already been recommended in 

 the Transactions of the Society. 



Further remarks by the gardener to the Institute, Bouche, upon the 

 destruction of tulip bulbs by a fungus (Sclerotium Tulipdrum Schedl.), 

 from which they may, in some measure, be preserved by filling up the beds 

 with fresh earth, and by transplanting the tulips to other beds. 



Communications from Professor von Schlechtendal, consisting of ex- 

 tracts from the interesting work of Dr. Gdppert, which is now published at 

 Breslau, upon the developement of heat in plants, their freezing, and the 

 means of protecting them ; also, a highly interesting description of the 

 botanical gardens at Palermo, from a recent number of the Ratisbon Botani- 

 cal Journal. 



Herr Otto, garden director, has given an account of the Arbor Vitae 

 (T'huja occidentalis) in Heidelberg, which is 212 years old. He has also 

 supplied historical communications upon the increase of the collections of 

 pahns on the continent of Europe within the last ten years. According to 

 his account, it appears that the royal botanic garden of Berlin, which, 

 twelve years ago, could not boast of more than .3 or 4 species of palms, 

 now contains 62 ; and, including the (^'ycadea;, about 80 species. To these 

 must be joined, as a valuable acquisition to science, the 48 examples of 

 rare kinds brought from the royal collection of Paris to Peacock Island, of 

 which 18 new species are destined for Berlin, Herr Otto, referring to what 

 he had repeatedly observed during his late visit to Paris, has made some 

 appropriate remarks upon the extraordinarily low price of plants exposed 

 for sale in the flower-market of Paris, which are still rather rare with us, 

 such as the Ixora coccinea, the different species of Lantana, Citrus ?«yrti- 

 folia, and the newest Pelargonia. He has likewise given further information 

 on the celebrated peach gardens at Montmirail, the espalier walls of which, 

 if in one row, would extend to the distance of several miles ; on the large 

 and not less celebrated cherry and strawberry grounds at Montmorency ; 

 on the great abundance of all kinds of trees and shrubs in the nursery gar- 

 dens of Paris ; and on M. Boursoult's curious collections of palms, arauca- 

 rias, and magnolias there. Herr Otto, besides, explained by manipulation 

 the method, usually as easy as successful, employed in the magnificent gar- 

 den of M. Soulange-Bodin at Fromont, for propagating camellias, azaleas, 

 and paeonies, &c., by herbaceous grafting. 



Of the various plants and fruits introduced for inspection, or for orna- 

 menting the place in which this Meeting was held, the following, among 



