446 Annates de la Societe d' Horticulture de Paris. 



of Brussels in the year 1820 ; of various hybrids between 

 GenUana lutea and purpurea found on the summit of a moun- 

 tain of Savoy ; of the hybrid ixias and geraniums found at 

 the Cape ; and showing how probable it is that insects, which, 

 it is well known, have predilections for particular plants, 

 should be the means of creating hybrids ; he draws the follow- 

 ing conclusions : — 



Hybrids are every now and then produced by nature. 



Hybrids are daily created by man. 



A genus of which there is only one species, seldom acquires 

 new species, because it has no opportunity of hybridising; 

 those, on the contrary, which have a great many species, 

 especially if they are natives of the same part of the globe, 

 have their numbers increased, because they have many oppor- 

 tunities of hybridising. 



May it not, therefore, asks Baron Hamelen, be concluded 

 that many of the plants ranked by botanists as species, are 

 hybrids ? 



We should answer, yes ; some few are undoubtedly hybrids ; 

 but we do not think it likely that any hvbrid, whether created 

 by nature or art, can be perpetuated by seed, and remain 

 distinct for any length of time. Much, however, may be said 

 on both sides of the question. The idea that most of the 

 species which now exist have been produced in the course of 

 ages by accidental crosses is, as M. Decandolle observes, very 

 seducing, as tending to trace a great number of complicated 

 effects to one single and easily comprehended cause ; but M. 

 Decandolle adds, that the rarity of hybrids in nature is against 

 such a conclusion. 



II. Notices, Analyses, fye. — 1. The Flower Market of 

 Paris. By the Abbe Berlese. This market has existed from a 

 very early period on the quays of the Seine. In 1818 it was 

 enlarged. The market-days are Wednesdays and Saturdays ; 

 gardeners who are entitled to attend the market have each a 

 place allotted to them, for which they pay 25 cents, per mar- 

 ket-day. From the 1st of May to the 1st of September, the 

 market continues from five o'clock in the morning, till eight 

 o'clock in the evening ; from the 1st of September to the 1st of 

 March, from seven o'clock in the moaning to five o'clock in the 

 evening; and from the 1st of March to the 1st of May, from 

 six in the mornino- till six in the evening;. This market is 

 exclusively for green-house plants, and other plants in flower 

 in pots, and for gathered flowers. There is another market 

 adjoining, for common nursery articles, including roots of 

 herbaceous plants, which is held on the same days and during 



