116 Retrospective Criticism. 



sown till the latter part of the month, when the temperature of the 

 atmosphere is higher, they will come up in the course of five or six 

 days, and will make a vigorous growth. Nothing is gained by too 

 eaily planting. Peas sown about the middle of April often overtake 

 those sown about the first of the month. — Ed.] 



D eslruction of the pea bug, {Bruchus pisi.) — The same corres- 

 pondent states that he has succeeded in ridding his peas of the bug, 

 in the following manner: — Inunediately after gathering the seed, he 

 subjects them to the action of boiling water one minute: by this 

 means he destroys the little grubs or larvae, which at this time are 

 just below the integuments of the pea, without destroying the vital- 

 ity of the seeds. If the peas remain in the boiling wiilev four min- 

 utes, most of them will be killed, but not all: of about forty ^teas 

 thus heated last year, three vegetated, and are now growing. The 

 corcle, he finds, is more tenacious of life than the cotyledons. — Id. 



Horlicullure in Wheeling, Va. — I am erecting a green-house, one 

 hundred feet by sixteen feet, and will soon have it filled with plants. 

 I have also in satisfactory operation a hot-house filt^-five feet long, 

 and fourteen wide, on your ]dan, as described in Vol. III., p- 23, but 

 covered (the hot water,) by boards only: the earth in the hot water 

 cistern is about two and a half feet thick. — Yours, J. Ritchie, Wheel- 

 ing, Va., Feb. 1, 1841. 



Jlltnoiid trees. — A sale of one himdred thousand almond trees, rais- 

 ed from seed, near New York, took place last November. We be- 

 lieve we have seen it stated that some of the trees had ])roduced fruit; 

 they would, probably, make good stocks for the peach or plum, if they 

 possessed no other value. VVe do not doubt, however, but that the 

 almond may be grown in this country as well as the peach. — Ed. 



Art. II. Retrospective Criticism. 



Horticulture in Baltimore. (P. 8.) — Dear Sir: — I perceive, in 

 looking over your Magazine, that you show rather a dis|)osition not 

 to give us our due in the progress we have made in horticulture, in 

 saying that we have done nothing in Baltimore. I can assure you 

 there has been a great deal accomi)lished. We have a fine cemetery 

 contiiining nearly a hundred acres, all walled round, and in good con- 

 dition: many interments have been made in it already. The situa- 

 tion is excellent, and for picturesque beauty there is none that will 

 surpass it in the country. The grounds formerly belonged to the 

 estate of the late Robert Oliver, Esq., and it is now called the Green 

 Mount Cemetery: the distance about a mile north from the city. 

 There is also another cemetery now being laid out, to the east, which 

 will be finished soon. 



There have been several green-houses built in the city, the past 

 year, and great improvements have taken place. Several cultivators 

 have become competitors for the beauty of their collections, w hich 



