Calls at Gardens and Nurseries. 75 



iiiclies with manure. Mr. Cowan will begin to force in the old range of 

 houses in a week or two. The greenhouse is iieat with hot water on tlie 

 sanii" principle as Mr. Ciishiiig's, and no difficulty occurred in keeping it up 

 to 45 deg. tlie coldest nights. 



Somerset Place., R. Rogcrson, Esq. — Jan. 17lh. Mr. Rogerson has a green- 

 house very conveniently attaehdd to his (luciling. It is heat hy hot water, 

 and he fiuds no ditlieulty in keeping up a proper temperature with very little 

 fuel. Mr. [log(^rson lias erected a pit in tiic hack i)art of the house, against 

 the wall, in which is plunged vines in pots, upon the coiling system. 

 They have already hurst some of their buds ; the part of the shoots above the 

 soil are wrapt up in moss, and syriugi.'d every few days to keep them moist; 

 the pit is about 2^ feet in width, 18 inches deep, and runs tiie whole length of 

 the house ; it is filled with epinmon tanner's bark, in which the pots are plung- 

 ed ; through the tan near tiie bottom of the jjit one of the pi|)es is conducted 

 from the boiler at one (md of the house to the reservoir at the other. The 

 pipes are of copper, about three and a half inches in diameter ; along the 

 front of the house is another pit, made in a similar manner to the for- 

 mer, though nnich smaller ; another of the pipes runs through this to another 

 reservoir at the same end of the house at which the boiler is jjlaced; in this 

 pit Mr. Rogerson raises fine lettuces, radishes, &c. &c. The heat imparted 

 lo the two j)its from the hot water circulating through the pipes was about 

 70 tleg. and very even ; Mr. Rogerson raised some of the pots that were 

 plungeil, and placing our hand upon the bottom of them, we found the heat 

 very moist and genial. We are confident that this method of lieating green- 

 houses, graperies, &c. will be generally adopted in a few years. 31 r. Rog- 

 erson has some fine large peach trees in pots, which he intends to take into 

 the greenhouse in a few days to force them ; they arc full of very ])roniinent 

 blossom buds, winch would soon expand if placed in a proj»er tempera'ure ; 

 he has also some very fine Cheri'j' and Fig trees in pots, which promise 

 finely: on the stage between the two pits mentioned above, 31 r. Rogerson 

 has several ])lants, among which is a fine Orange full of ripe fruit ; several 

 Gladioli in a forward state, almost ready for fiovveriug, look strong and 

 healthy. Some variegated Camellias were just sliedding the petals of some 

 fa<le(l flowers. 



At some future time we hope to have the opportunity to speak further of 

 the hot water system as adopted by 31r. Rogerson, wliich is somewhat differ- 

 ent from others we have seen. 



In our garden at Camhridgeport, we have now coming in bloom Iris chi- 

 nensis ; it has ibrovvn up a spike fourteen or fifteen inches high, and shows 

 sevftu or eight buds; Camellia japonica speciusa (Rawe's Striped VVarratah) 

 is now oi)en, the first time of ils fiowering abwut Boston, and we believe in 

 the country ; it is a superb flower; the color is of a dark crimson-velvet red, 

 with occasional daslies of white on many of the inner petals. We have hu- 

 niilis, anemonefiijra alba, crassinervis, and some (uher choice varieties with 

 fine buds. Priuuda prfciiitens, alba, and pm'purea, have several weeks dis- 

 played, and continue to display their und)ella:ed heads of snowy and pnrjile 

 blcjssoms. Cnllomia grauditiura which we took up from the flower-border 

 last aiUumn is now showing some of its delicate buff-colored flowers. We 

 observed this in flower at Mr. I'ratt's; it is ail annual, but the seed should be 

 sown very early to have the i)lants bloom before fi'ost. 



Many of our annual plants if sown late in autumn and trans|)lanfed into 

 small pots, would be liigi ly ornamental in the green-house. Among others 

 that we have tried, are Ageratum mexicana, and Cilia capitala; the latter 

 throwing out its heads of sky-blue flowers througliout the whole winter sea- 

 son ; the })lants are very hardy, and require luit little care to preserve them. 

 Stevia serrata and purpurea are also very beautiful ; we saw a plant of the 

 purpCa-ea at Mr. Lowell's a tijvv weeks since which had open a fine cyme of 

 flowers; it is a valuable hanly perennial. 



