Annates dcs Sciences Physiques et Naturelles, 8fc. 55S 



M. Hartweg, with narrow, glaucous, and pale flowers." {B. M. R., No. 104,, 

 July.) 



Asphodeldcece. 



1046, J'LLIUM 28591 azilreum Ledehour. 



Synonymes : A. cjerilleum Pallas, A. cserulescens Gf. Don ; Bot. Reg. 1840, 51. 



Commelinese. 



1000. TRADESCA'NTJ^ ^ ,„,„ ^„ 



tumida Lindl. tumid :^ lAl or 1 s R Mexico 1839. D co. Bot. reg. 1840, 42. 



A very curious plant from Mexico, with reddish flowers and deep green 

 leaves, which are purple on the under side when young, and which are rolled 

 back in a very singular manner when full grown. The stem is still more 

 remarkable, as the joints are swelled and tumid. It is half-hardy, and " grows 

 freely in sandy loam, but is very apt to suffer from damp in winter." {Bot. 

 Reg., July.) 



[of the filaments.) 



SPIRONE^MA (Speira, a spire, nema, a thread ; in alUision to the spiral threads that occupy the interior 



fr^grans Lindl. fragrant :^ lAI cu 1 my W Mexico ? 1839. D co. Bot. reg. 1840, 47. 



A very curious rush-like plant, with small but very fragrant flowers. {Boi. 

 Reg., August.) 



REVIEWS. 



Art. I. Annates des Sciences Physiques et Naturelles^ (T Agriculture et 

 d' Industrie, publiees par la Societe Royale d' Agriculture de Lyon. 

 Tomes I. and IL, and Livraisons 1, 2, and 3. of Tome III. Lyons 

 and Paris, 1838, 1839, and 1840. 



Livraisons 1, 2, and 3. of tome i. are reviewed in our volume for 1839 

 p. 168., where we have characterised the work as one of the most respectable 

 of the kind published in France. We now, therefore, commence at the point 

 where we left oiF, and shall notice whatever appears to us of direct interest 

 to gardening, agriculture, and domestic improvement. 



At the seance of June 14. 1838, Professor Audouin, of Paris, gave an 

 account to the Society of his Researches for the Destruction of the Pyrale, 

 a species of moth, which is so injurious to the vine in France as frequently to 

 destroy the crop through entire districts. After an extremely interesting 

 history of his experiments, and of the very singular manner in which the 

 eggs of the female are fecundated, M. Audouin states that the mode of 

 destroying" the insect which he found most effective is, to place among the 

 vines, in the nighttime, lamps enclosed in glass, and suspended over a saucer 

 of oil, or any greasy or viscous matter. The moth flies to the hght, which 

 it is prevented from touching by the glass of the lamp, while, by repeatedly 

 striking against it, in its endeavours to get at the light, it drops down and is 

 drowned or fixed in the oil or greasy matter. One cultivator, in the year 

 1837, put down in his vineyards, in one night, 200 of these lamps, at 25 ft. 

 apart every way. The lamps burnt for about two hours, during which time an 

 average of 130 moths were fixed in each saucer, making in all 30,000 insects. 

 A fifth part of that number of moths consisted of females, each of whom 

 would have laid 1.50 eggs, which in a few days would have produced 900,000 

 caterpillars. August 7th, 180 lamps, placed in the same vineyard, and for 

 the same period, caught each 80 moths, making in all 14,400 insects, three 

 fourths of which were females ; but admitting only the half, or 7,200 females, 

 in multiplying this number by 150, the number of eggs that each female is 

 supposed to lay, the total number of caterpillars destroyed will be 1,080,000. 

 Another mode which M. Audouin recommends is, gathering the leaves, or 

 the points of the shoots, immediately after the eggs have been deposited, or 

 when they have been newly hatched. As the eggs are always laid upon the 

 upper surface of the leaf, they are easily detected by women or children. 

 By this process 20 persons, between the 7th and 1 1th of August, gathered 

 1840. Oct. o o 



