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JULY 29, 1909. 



The Weekly Horists' Review. 



67 



Let Us Overhaul Your Greenhouse Heating 



System Before the Fall Rush 



Don't wait until you need heat in your greenhouses, to know 

 if your plant is in condition to give it to you. Better let us 

 look over your entire heating system now, repair or replace 

 your boiler if necessary — put in new pipes, headers and so on — 

 in other words, give it a thorough overhauling. You then take 

 no chances of a breakdown and a frozen up house. 



We know how to do it — have been doing it for over forty 

 years — the oldest Greenhouse Heating Engineers in the business. 



Hitchinc^ &.Coinpaiiyr 



Write to 

 Qeneral Offices and Factory: 



Elizabeth. N. J. 



New Vork Office: 

 1170 Broadway. 



Mention The Review •when you write. 



EMERGENCY PIPE GUMPS 



To repair splits 

 and rust holes 

 on pipe. Made 

 of malleable 

 iron, and guar- 

 anteed to stop 

 the leaks. 



Send for cat- 

 alogue of 

 Pip* Repairs wid Steam Specialties 



JAMES McCREA & CO. 



Manufaoturere 

 •I -63 W. Wuhington St., CHICAGO 



Mention The Review when you write. 



sufficient, with the draughts all tight. 

 Sometimes, when we would fire too heav- 

 ily, the water would force back and out 

 i>f the evaporation tank. With the valves 

 in the south end of the greenhouse 

 ilosed and a very hot fire, the pipes 

 uould "knock" as though struck with a 

 ^li'lge hammer. What causes the 

 knock" and why does the water force 

 '':!'k out of the evaporation tank? 



1 am building another house of the 

 >i'iie size, and the two will be con- 

 'i' (ted. Are my riser and return large 

 '""Ugh for both houses, or will I have to 

 ' ':> the boiler again? Would two 2^^- 

 •'■'li flows be better than a 4-inch? 

 "^ luld all flows and returns in both 

 I' iws have the same grade? The houses 

 ■ iig connected, how many returns should 

 ' five in each house? How many houses 

 this size can I heat with my boiler? 

 ' '11 located in Montana. W. E. G. 



I'he ' ' knock ' ' you speak of in your 

 ''•' 'resiling letter is caused by the boiler 

 ' ' ''^ing steam. This also causes the water 

 I" '"low out of the expansion tank. The 

 '' ';■'! firing heats the water to a boiling 

 I'Miit before it has time to circulate, thus 

 • Mising steam in the boiler strong 

 '""Ugh to push the water out of the ex- 

 I'.'iiision tank. The steam, coming in 



IC 



INSTALL A 



DETROIT" Return Trap 



AND YOU BUY A GUARANTEE 



It takes 90 to 120 lbs. of steam per horse power to operate 

 an ordinary boiler feed pump. "Detroit" Return Traps 

 require only about one-tenth that amount. Why not save 

 the nine-tenths ? 



Write UB size of boiler and number of square feet of glass 

 in your greenhouses, for our proposition. 



Address Deptf .R., 



DETROIT, MICH. 



Mention The Review when you write. 



THE KROESCHELL BOILER 

 NOT CAST IRON 



HAS 



WIITEB 



FRONT 

 SIDES 

 TOP 

 BACK 



K«w Oatalogae and prices on application. 



Kroeschell Bros. Co. 



51 Erie St., Chicago 



Mention The Review when you write. 



