Sin-TEMBEK 30, 1909. 



The Weekly Florists^ Review* 



7\ 



The Perfection 



Of Up-to-Date 



Greenhouse Heating 



Science 



Automatic Hot Water Circulator The Castle system of forced circu- 

 lation of hot water for greenhouse heating is the only one that has demonstrated its 

 f)racticability, economy and perfection of action. It works while you sleep and if 

 anything should happen to put your forced circulation out of commission, this device 

 takes up its work automatically. Its use increases the efficieney of your heating 

 plant but reduces the expense. 



Don't build a gpreenhouae or remodel the old plant \iritliout ■ecuring 

 complete information about the Castle Boiler. 



THE CASTLE COMPANY 



Send your address and I will 

 mail you literature. 



170 Summer Street, BOSTON, MASS. 



Mention The Review when you write. 



CAPACITY OF PIPES. 



We have a house 110 feet long, which 

 is furnished with thirteen 1-inch pipes. 

 We should like to know how many ly^- 

 inch pipes it would take, to equal the 

 thirteen 1-inch pipes? L. H. E. 



Tin lines of li/i-inch pipe are equal to 

 thirteen lines of 1-inch pipe in point of 

 radiating surface. 



NOT ENOUGH RADIATION. 



I I:ave one greenhouse 18x75 feet and 



' feet to the ridge. I am using 



•ch pipe for the flow and have six 

 pipes for returns. Will this give 

 lit heat (about 45 degrees) in zero 

 r? A. R. 



I lid your house have only one 

 ;,'able and not more than two feet 

 '^s on each side wall under the gut- 

 "U will be able to carry 40 degrees 

 I with the piping you have. A mer- 

 |al would increase the efficiency of 

 i'iping in zero weather. 



IREE VEGETABLE HOUSES. 



wish to heat three connected 

 • 28x200. The houses run east 

 'St, equal span; height to gutter 

 <'t six inches; to ridge tMrteen 

 •^Hir inches; both ends glass and 

 teet of glass in the south side. 

 'iler house is thirty- two feet long 

 ■ands in the middle of the north 

 I'rom the boiler house to the west 



glass, the same as on the south 



' :ist of the boiler house the range 



' ts with old houses. We shall heat 



steam. The boiler is rated at about 



horse-power and we want to set 



elev< 

 31/. i 

 2-in, 

 suffi. 

 weai 



81 

 gla:-: 



of K 



ter. 



at ■/.. 

 cur\ 

 you 



w 



lioii- 



an<l 



six 



feel 



thr, 



Th.. 



an(| 



8i(]f 



end 



side ; 



coni;, 



ffitli 



fortv 



There is a big difference between a Return Trap 

 assembled in a Jobbing Machine Shop, and a 



Two No. 14 "Detroit" Return Traps located 

 on floor above boilers in Kreenhouses of 

 Handolpb & McClements, Pittaburgr, Pa. 



"DETROIT" 

 RETURN 

 TRAP 



Built entirely witliin one of the 

 finest equipped, complete 

 plants in the country. 



INSTALL A "DETROIT" AND YOU BUY 

 A QUARANTEE. 



AMERICAN BLOWER COMPANY 



General Offices, DETROIT, MICH. 



.Mf'iitinn The Review when you write 



the boiler on the level and use either a 

 trap or pump. What size pipe should 

 we use and how should they be placed? 

 There will be no benches, for the 

 houses are to be used for vegetables. 

 Wliat size should the main pipe be from 



the boiler? How many flows and re- 

 turns will be needed in each house to 

 give 60° in zero weather? W. C. P. 



The trap system is generally used and 

 many growers have adopted the double 



