170 



The Florists' Review 



March 30. 1922 



which we seldom have. I have not been 

 able to get more than 60 degrees in the 

 greenhouse or 70 degrees in the dwell- 

 ing on cloudy days when the outside 

 temperature was 25, 35 and 40 degrees 

 above zero. What is wrong? 



J. W. M.— Colo. 



"While there appears to be a slight 

 discrepancy in the amount of radiation 

 in the greenhouse, the real difficulty is 

 probably due to the number of returns 

 which are supplied by one 2-inch flow 

 pipe. The sketch shows that the green- 

 house has three feet of glass in the 

 two side walls and one end wall. At 

 least 250 square feet of radiation should 

 be used, if a temperature of 70 degrees 

 is to be maintained in zero weather. 

 If all of the radiation were in the form 

 of four to six long returns, the amount 

 required would not be so much in excess 

 of the amount which one 2-inch flow 

 pipe could supply, but with thirteen 

 returns and what is estimated to be 

 rather less than 200 square feet of ra- 

 diation, it is not strange that there is 

 difficulty in holding the desired tempera- 

 ture. 



Instead of using one 2-inch main for 

 the entire house, it would be advisable 

 to run one flow for each of the three 

 coils. With careful firing it will then 

 be possible to obtain 70 degrees, but it 

 will be more economical in fuel and 

 labor if the number of return pipes is 

 increased to sixteen. Place one flow on 

 each side wall plate and the other two 

 feet below the ridge, giving all of them 

 a fall of one inch in ten feet. 



While the size of the rooms in the 

 dwelling and the number of sections 

 in the radiators are given, the height 

 of the rooms, the construction of the 

 walls, the height and number of col- 

 umns in the radiators and the size of the 

 windows arc not stated. If the walls 



(C'ontlnui'tl on jiatff i'i'2.) 



MixYoiLY Own 



'l^IIERE'S Jnst one siibstantlal, ovor- 

 ■*■ luKtliKT iiiat<Tliil to UHO In buiUllinf 

 bpnrlics and side walls In your (rrcrn- 

 housc Conorefc. And thcro'H inst 

 one way to put those jobs tlironcli In 

 jig tlnii- and at small cost— that's to do 

 thoni f>n your own time, witli 

 your own mixer. 



Hundreds of uroonhousc Tiien have 

 found the .laetfoi- Mixer (3-E) an Ideal 

 outfit forthiir use. They have found 

 this "Mlx-n-Miniite" tlitliip-druni ma- 

 chine a Ihorouiihly profitable Inyest- 

 ment. It Is compact, simple and the 

 "rislit" size. You'll be surprised at 

 the price. Write today. 



THE JAEGER MACHINE CO. 



526 Oublin Ave. Columbus, Ohio 



Mention The Review when you write. 



Sick? 



ill ifyot^iise 

 tcotine Fumigator 



lO-lb. tins $8. SO 

 2ii-lb. •' 2. SO 

 l-lb. " 1.7S 



HALL TOBACCO CHEMICAL CO. 

 3961 Park Avenue, St. Louis, Mo. 



PIPE and FLUES 



A LL SIZES of second-hand pipe, with 

 •*»• new threads and couplings, in ran- 

 dom lengths or cut lengths. Also 

 make a specialty of handling boiler 

 flues for retubing boilers or for green- 

 house piping. All flues are trimmed 

 and thoroughly cleaned by machine. 



JOHN GROH 



1885 Clybourn Ave., CHICAGO, ILL. 



Union Grate 



A Rocking Grate that Saves Coal 



Write for catalogue and prices 



MARTIN GRATE CO., '^'^dS^^^ 



To stop that 



pipe leak per- 

 manently — 

 cheaply — use 

 Emergency 

 Pipe Clamps. 



M. B. Skinner Co. 



558-562 Wukiiutoa 

 Bool., CUcaco. 



ESTABLISHED 1867 



S. WILKS MFG. COMPANY 



Manufacturers of 



WILKS HOT WATER BOILERS 



FOR GREENHOUSE HEATING 

 3S17.3S39 SUeUs Are., CHICAGO, ILL 



