a?SE I^LORAL WORLD AlfD aiRDEN GUIDE. 



rises to its own level, and entei'3 the boiler 

 at the top of the lid, thus keeping it con- 

 stantly self-iilled ; a small pipe for the 

 escape of steam, as a safety valve, was also 

 inserted at the top, and conducted outside 

 the house. The cistern, I generally And, 

 is kept filled by the rain wliich falls on the 

 roof of the greenliouse, and wliich is con- 

 ducted into it by a cast-iron gutter fixed 

 under the eaves. Tiie only attention it 

 requires is to keep the cistern full (and 

 weU covered over if outside the house), 

 during a long frost. I also attached a 

 tlu*ee-inch flow and return pipe to the 

 boiler to pass along the front of tlie house, 

 as I did not get sufficient heat in very cold 

 weather. The flue, which at first was 

 made of three-inch sheet-iron pipe, I 

 found emitted an unpleasant smell, in- 

 jurious to the plants, so I replaced it with 

 three-inch glazed drain-tile pipes, which 

 were fised round one end and back of the 

 house in an inclined plane, and so out at 



touch it. In the severest frost I could, if 

 I wished, by merely tm-ning on the gas a 

 little stronger, get the thermometer up to 

 above 50'. All my plants, some of them 

 tender ones, thrive well, and I have never 

 yet found the slightest harm arise from 

 having the gas-bui"uer ivithiii instead of 

 ivlthout the house. 



Before concluding, I may mention 

 another patent gas-stove (the patentee's 

 name I forget), adapted for a small green- 

 house, and which likewise answers well 

 inside the house. It has been in use now 

 during the two last winters by Mr. Hop- 

 good, florist, Bayswater, with the greatest 

 success, although I cannot speak of its 

 merits from personal experience, but Mr. 

 Hopgood assured me that there is never 

 the slightest degree of foul air comes oif 

 from the stove ; I have often myself ueen 

 it burning, and certainly could perceive 

 none. There is no flue of any sort 

 attached to it, the peculiar internal con- 



aa, Detaclied water-troughs ; B, Flow and return pipe ; c, Cistern; 

 D, Steam-eacape pipej E, Supply pipe ; g. Gas-pipe. 



the other side, where the flue was earned 

 up four or five feet, and a movable cowl 

 placed on the top. Tliis I found effec- 

 tually prevented any back draught coming 

 down the flue. At the very bottom of 

 one side of the boiler I fixed a brass tap, 

 which enables me to draw off warm water, 

 and which I find very convenient when 

 watering the plants. Since I made the 

 above alterations, I have found the stove 

 answer admirably. There is never the 

 slightest escape of foul air. T^o attention 

 whatever is required beyond, as I said be- 

 fore, seeing that the cistern is kept filled 

 during a long continuance of dry weather. 

 Last winter I often left it burning for days 

 together without once having occasion to 



struction consuming in itself all foul air. 

 Mr. Hopgood has this stove in use in a 

 small conservatory for the sale of plants 

 at 18, Bayswater Terrace, where I have 

 no doubt he will have no objection to 

 allow any one desirous of doing so to in- 

 spect it. I have constantly seen it burn- 

 ing there last winter in the midst of ca- 

 mellias, azaleas, and other plants in fidl 

 bloom, and all looked well and healthy. 

 The stove is about seven or eight inches 

 in diametei', and about two feet six inches 

 high ; the gas is laid on to it by means of 

 a flexible gutta-percha tube, so that the 

 stove can be moved at plcisui'o to any part 

 of the house in a moment. Mr. Hopgood 

 has had a small iron basin made to set on 



