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far from any tobacco plantation. The only difference which it seems 

 to bear from the cultivated plant is in height, a circumstance easily 

 explained. Though much tobacco is grown on this part of the Rhine, 

 the greater part of that smoked in Germany comes from Holland, 

 where the rich, damp soil is very favourable to it, though it very soon 

 exhausts a soil. 



" I commenced my excursions early in May, immediately after my 

 arrival in Bonn, the first being made to the Kreutzberg, a sacred, 

 wooded hill, a mile or two distant. In the woods here I found that 

 all the earlier flowers — the hyacinth, anemone, celandine, periwinkle, 

 and the like, which had hardly flowered when I left Scotland — were 

 gone, and were succeeded by a new series, the woods being full of 

 the lily of the valley [Convallaria majalis) and Solomon's seal [C. 

 mtdt/Jlora), and also, in great abundance, an entire stranger, which I 

 found to be Maianthemum bifoliura, DC. Phyteuma nigrum, a spe- 

 cies not found in Britain, was the next observed, and is distinguished 

 by its dark violet flowers and linear bracts. Erica Tetralix was already 

 pretty frequent. K. cinerea, on the other hand, is very rare, the only 

 authentic habitat for it in North and Middle Germany being at Dol- 

 lendorf, near Bonn ; but there it is now extinct, having been cai'ried 

 off by botanists. Ulex Europaeus also, though found at Holstein, 

 Hamburg, and Bremen, is not found so far south. The next plants I 

 found were Valerianella olitoria and carinata, and Genista pilosa, dis- 

 tinguished by its want of thorns, its woody stem, hairy pods, and 

 under side of leaf silky. All the vineyards were full of Ornithogalura 

 umbellatum, and, growing along with it, Euphorbia Cyparissias and 

 Esula, Holosteum umbellatum, and Asclepias vincetoxicum, L. The 

 latter is common in Germany. On the hills I^also found Lithospev- 

 mum purpureo-casruleum and Cerastium brachypetalum, two plants 

 characteristic of the flora. The Cerastium is readily distinguished by 

 its grayish-green colour, with long, gray hairs, and flower-stalks two 

 or three times longer than the calyx. 



" Later in the month I visited the Drachenfels, and the rest of the 

 seven mountains. On the summit of the first I found Alyssum raon- 

 tanum. Alyssum calycinum also is universal over the country, and 

 almost as common as Sisymbrium officinale, and grows commonly to 

 about one-half or three-fourths of a foot, and frequently to a foot and 

 upwards. 



" In the woods were Lonicera Xylosteum (in great abundance), Paris 

 quadrifolia (often with five or six leaves). Euphorbia dulcis (a rare 

 species), Rharanus Frangula, and Plantago media. In the immediate 



