1 he rionsts Kcvicw 



nu\snDma, t, ^vxo. 



SuBSCBiBZBS are invited to write the 

 Editor of this Department with regard to 

 any details of greenhouse heating that 

 are not understood. But please do not 

 ask The Review to make a choice of ap- 

 paratus for you. The greenhouse heating 

 equipment advertised in this paper is, we 

 believe, the best for the trade to buy, and 

 each article the best in the special field 

 of its adaptation. 



A HOMEMADE GAS BUBNEB. 



This is in reply to an inquiry from 

 C. P. G., which appeared in The Review 

 of October 24, page 78, under the head- 

 ing of "Natural Gas as Fuel." 0. P. 

 G. states that he is planning to use nat- 

 ural ^as in his hot water boiler and that 

 he wishes to know where he can get the 

 best burner. I have a burner that does 

 the work, but my supply of gas has been 

 shut off and so I shall be willing to send 

 this outfit to C. P. G. at the price of 

 junk, if he wants it. I have used gas 

 for twelve years to heat 5,000 square 

 feet of glass. If C. P. G. cares to write 

 again, I shall be pleased to explain the 

 burner in detail. 



I might state now, however, that the 

 burner was placed in the doorway of 

 a Bumham 8-section boiler. The door 

 itself was removed and sheet iron was 

 cut to fit the open space. In the fire box, 

 behind the burner, fire bricks were so 

 arranged as to cause a second combus- 

 tion of the gas. The lower part of the 

 burner is made of 4-inch pipe, to which 

 are attached four jets, each with a sep- 

 arate key. Only two of the jets were 

 used in moderate weather. After try- 

 ing several kinds of burners, I have 

 found this one to be the best. Yet the 

 entire cost of making and installing it 

 did not exceed $5. J. F. Sked. 



Westerville, O. 



GAS TO EQUAL COAI.. 



Please tell me through the Heating 

 Department of The Review how many 

 cubic feet of gas is equal to a ton of 

 soft coal. C. A. D.— O. 



It is difficult to make a comparison 

 between the fuel value of gas and soft 

 coal, since there is considerable varia- 

 tion in the heating value of the differ- 

 ent classes of coal and the same also 

 applies to gas. Also, we are not certain 

 whether coal gas or natural gas is re- 

 ferred to. 



The value of both coal and gas is ex- 

 pressed in thermal units. In the case 

 of soft coal it varies from about 14,000 

 British thermal units (or B. T. U.) for 

 West Virginia coal, to 12,000 B. T. U. 

 for Ohio coal. In a similar manner coal 

 gas is rated at from 600 to 700 B. T. U. 

 per thousand cubic feet. 



The number of thermal units in coal is 

 based upon the amount of combustible 

 matter it contains, and as a rule not 

 more than 20,000 cubic feet of gas will 

 be required to equal a ton of soft coal. 



SALT LAKE CITY. 



The Market. 



Flower market conditions never were 

 BO acute in the history of this region. 

 The shortage of chrysanthemums is due 

 to the decrease of their cultivation in 

 California this year on account of the 



WHEN YOU BUY GET A KROESCHELL 

 'THE BOILER OF UNEQUALED FUEL ECONOMY' 



VxlO^ GREEN H0U5E 



iVT" Rni? PR 



BOILER 



a 

 a 



D 



a 



D 

 D 

 D 

 D 

 D 



a 



D 

 D 

 D 

 D 

 D 

 D 

 D 

 D 



a 



□ 

 D 

 D 



n 



D 

 D 

 D 

 D 

 D 



a 



D 



D- 



D 



D 



D 



D 



D_ 



D 



D 



D 



n 



D 

 D 

 D 

 D 



n 



D 

 D 

 D 

 D 



a 



D 

 D 

 D 

 D 

 D 

 D 

 □ 

 DDDDDD DanDDDDDDDnaDDn 



S3 



^Ifc^ft HOT VJf^^ 



KROESCHELL BOILERS will give record 

 breaking services this Winter. 



CAN SHIP 

 ANY SIZE 

 AT ONCE 



NOT 



CAST 



IRON 



Neither in the East or West, nor the North or South has any other 

 make of boiler ever equaled the performance of the Kroeschell— 

 installed for 3,974,605 square feet of glass in 1916-1917. Every 

 customer immensely satisfied. The high efficiency and low cost of 

 operation make the Kroeschell the best of all boilers for Florists' use. 



KROESCHELL I50ILERS have satis- 

 factorily and permanently solved the 

 effective hurning of screenings. They 

 will burn the worst grades of coal, even 

 the dirtiest culm or sawdust and wood 

 refuse. 



Greenhouse owners like the KROES- 

 CHELL because of its extreme simplic- 

 ity and freedom from trouble. As a fuel 

 saver, it pays its own way. The KROES- 

 CHELL will increase your heating plant 

 efficiency 20 to 40%. 



The KROESCHELL has proven its worth in many of the large establish- 

 ments in this country. It has frequently been selected by the most care- 

 ful buyers in competition with all other types of boilers. Its efficiency 

 and capacity are completely beyond any other boiler. 



NOTE 



We are still offering a limited number of trial 

 packages of Z-i-N-C-O, the wonderful soot destroyer. 

 Have you ordered your supply? The quantity is 

 limited. The price is $3.00. If you have soot trouble 

 order a trial package at once. 



KROESCHELL BROS. CO., niKcSi'Sltr 



a 

 o 

 o 

 o 



D 



o 



D 



o 

 a 



D 



□ 



D 

 D 

 D 

 O 

 D 

 D 

 □ 

 O 

 D 

 O 

 O 

 D 

 O 

 O 

 D 

 D 

 O 

 O 

 D 

 D 

 .O 

 D 

 D 

 O 



o 

 _a 



D 

 D 

 D 

 D 

 D 

 D 

 D 

 D 

 D 

 D 

 O 

 D 

 D 

 D 

 D 

 O 



a 



D 



D 

 D 

 D 



a n D a D o 



TELEGRAPH 



ORDERS AT 



OUR EXPENSE 



