5-] 



AND HORTICULTURIST. 



75 



cold chimney, all the heat the little fire makes is 

 absorbed by the neighboring bricks, and there 

 is very little warm air left for the heavy column of 

 cold air in the chimney to force up. In fact it 

 presses down on the fire and rather forces the 

 draft out of the furnace door than upward. The 

 expansive power of a little steam would therefore 

 most likely force the column of cold air onward 

 and the weak amount of heat from the fire would 

 naturally follow. — Ed. G. M.] 



A PRODUCTIVE ROSE. 

 BY JAMES W. DOHERTV, NEWPORT, R. I. 



The following are the number of roses I have 

 cut from one Marechal Niel rose-bush in one year : 



Oct. 28 137 



Nov. 4 mi 



" 6 50 



" 11 320 



" 19 130 



Dec. 



1.... 



2... 

 24.... 

 31.... 



Jan. 12. 

 " 13. 

 " 14. 

 " 21. 

 " 28. 



974 



~28 



.30 



a5 



38 

 129 



46 



403 



Feb. 4. 

 " 11. 

 " 18. 



March 18.. 



" 22.. 



" 2.5". . 



30.. 



April 1 . 



10. 

 12. 

 13. 

 1.5. 

 16. 

 21. 

 2.5. 



May 7. 

 10. 

 18. 

 24 



30. 



. 250 

 . 255 



. 95 



600 



. "Too 



. 196 

 . .323 

 . 75 



694 



. "300 

 . 200 

 . 80 

 75 

 . 12 

 . 310 

 . 2:S0 

 . 152 

 . 33 

 . 30 



1422 



. ~50 

 . 25 

 . 2.5 

 . 30 

 . 25 

 . 130 



285 



June 1 12.5 



7. 

 10. 

 11. 

 13. 

 14. 

 16. 

 18. 

 19. 

 20. 

 21. 

 22. 

 23. 

 24. 

 25. 

 26. 

 27. 

 28. 

 29. 

 30. 



July 1.. 



"" 2.. 



" 3.. 



" 4.. 



" 0.. 



" 7.. 



" 9.. 



" 10.. 



" 11... 



" 12.. 



" 13.. 



" 14.. 



" 15.. 



" 16.. 



" 18.. 



" 19.. 



" 20.. 



" 21.. 



" 22.. 



" 23.. 



" 24.. 



" 2.5.. 



" 26.. 



" 27.. 



50 

 45 

 100 

 54 

 51 

 51 

 57 

 45 

 26 

 31 

 16 

 18 

 16 

 10 



_730 



6 

 6 

 5 

 10 

 18 

 7 

 6 



10 

 18 

 18 

 15 

 19 

 19 

 18 

 5 

 20 

 19 

 10 

 18 

 20 

 5 

 44 

 21 

 30 

 50 

 52 

 87 

 66 



622 



Aug. 1. 

 " 2. 

 " 3! 

 " 4. 



103 



112 



178 



207 I 



250! 



213, 



113 



131 



131 1 



77 



79 



69 



70 



47 



40 



10 



1,830 



Sept. 10... 

 '• 13... 



Oct. 



4 



5 



18 

 30 

 21 



118 



45 

 23 

 63 

 50 



30 

 33 

 45 

 43 

 31 

 14 

 19 

 29 

 31 

 10 



519 



Total 8,806 



HEATING BY COAL OIL LAMPS. 



BY N. BUSBY, BURLINGTON, N. J. 



Having had a short but very satisfactory experi- 

 ence in the use of coal oil stoves for heating small 

 conservatories, I would have no hesitation in rec- 



ommending them. I use mine at present more as 

 an auxiliary. 



Having built an addition last year to my green- 

 house, and not wishing to go to the expense of en- 

 larging the flues, I procured a No. 3 Florence 

 stove, holding about three quarts, with three wicks, 

 and would not be without it. One night, with the 

 thermometer outside at 18^, I raised the tempera- 

 ture some 6^ in twenty minutes, and that in a house 

 12x30, glass on three sides. The heat is steady as 

 long as the fuel lasts. By actual test, with the 

 above mentioned supply, mine has burned fifteen 

 hours. I think seriously of putting one in my 

 fernery next fall. I think Miss W., of Quaker Hill,. 

 N. Y., would find one of these stoves the very 

 thing for the purpose she desires. 



NOTES ON HOT WATER HEATING. 

 BY SAMUEL C. MOON, MORRISVILLE, PA. 



"Get the water into an expansion tank at the 

 highest point as quickly as possible and let all the 

 pipes descend from that tank through their whole 

 length until they re-enter the boiler." 



This is the substance of a remark once made by 

 an old experienced florist and boiler-maker of 

 Philadelphia, when conversing about greenhouse 

 boilers and hot water heating. Since then I have 

 acted upon the suggestion and put it to a practical 

 test, and am thoroughly convinced that it is the 

 most rational and effectual plan for heating green- 

 houses. 



The circulation of water in pipes is caused by 

 the variation in the specific gravity of water as its 

 temperature varies. It is started and kept in 

 motion by the application of that at the lowest 

 point. 



The warmest water always rises to the highest 

 accessible point, tending to create a vacuum in the 

 place whence it emanates, while cooling water is 

 continually settling towards the lowest point and 

 will enter the boiler by the lowest inlet, to replace 

 that which has arisen. 



" Hot " and " cool " are only comparative terms 

 and we may say that the only " hot " water there 

 is about a greenhouse heater is in the top of the 

 boiler, because it commences to cool immediately 

 upon leaving it, therefore it should commence to 

 settle or flow down hill from that time. For this 

 reason the water should rise perpendicularly from 

 the top of the boiler into a capacious expansion 

 tank situated several feet above it, and then flow 

 down hill all the way around the houses until it re- 

 enters the boiler at its lowest part, having a reg- 



