August 11, 1921 



The Florists^ Review 



119 



Big Tubes or Little— Which? 



You know that every time .vou try to drive a %-inch bolt into a 



'j-inou hole, you strip the thread. 



Kver.T time you try to force burning sases through small tubes, 



you slow down draft and soot scon chokes the tubes. 



That's one of the reasons why the small tube boilei s require such 



hJKh chimneys. 



They must have strong enough draft to literally drag the pases 



through the boiler. 



When we designed this Tubular boiler of ours, we didn't try to 

 drive a 5^-inch bolt into a 'i inch hole. 



We made the twa combustion tubes and the return tubes big 

 enough so the gases will pass through easily, giving a moie com- 

 plete combustion and therefoic greatly reducing the scoting up of 

 the tubes. 



IJut not content with that, wo made the enliie conibu-^lion ihani- 



ber at the rear of the boiler- water surrounded. ^'^ 



A big surface that in other boilers is a doad surl'aco, is » miaht.\ 



live one in theRurnbam. 



Now to make firing easier, we niatle the fire bov doors good and bi;; — 



just as big as you have always wished lire bo.v dcors werf . 



Then on the large size ones, we put side doors on the ash pit to 

 make cleaning out easier. «*>►' 



We thought we had a aood boiler, but those who own tlu^m have 

 frankly told us some good things that surprised us. 

 If you would like to hear what some of those things ari-. yoiiare 

 cordially invited to be our guest and we will go on a little calling 

 trip with you. 

 You say when. 



or4& Burnham^. 



Builders of Greenhouses and Conservatories 



IRVINGTON 

 New York 



HOSTON-n NEW YORK 

 Little Bldg. 4Jnd St. Bldg. 



Eastern Factory 



Irvinglon, N. Y. 



Cl.KVEI..\Nr) PHILADELPHIA 

 4117 I'lmer Hldg. Land Title Bid;;. 

 Western Facloiy 

 Dps Plaines, HI 



TOUO.N'TO CHICAGO 



Royal Bank Bldg. Continental Bank 



Canadian Factory 

 St. Catharines. Out. 



HI dp. 



■,<X^//(-:?^f;i 



HOW ABOUT THAT NEW BOILER? 



YOU ARE SAVING MONEY IF YOU BUY A 



Wilks Self-Feedings Hot Water Boiler 



BUILT FOR BEGINNERS 



It will stand between you and future 

 worry and unnecessary expense 



WILKS HOT WATER BOILERS 



aremadeof the best quality of steel, strongly riveted and calked, with no cast-iron 

 sections to crack. Our catalogue is yours for the asking. It tells all about our 

 heaters, shows their economy and gives a plan for healing a model greenhouse. 



S. WILKS MFG. CO., 3523 Shields Ave., CHICAGO, ILL. 



1 



one-seventh of this is 328. A chimney 

 twenty-seven inches squ.nre inside has 

 ■■in area of 729 square inches. 



If the draft is not good, it is possible 



that there is some defect in the ar- 

 rangement of the bridge, or of some oth- 

 er part of the boiler that will affect the 

 draft. 



While the flue is stifiicieutly large to 

 make up for any deficiency in the height 

 of the boiler, yet, if everything else 

 seems jiropcrly adjusted, it would be 



