XlNUJLBY 26. 190S. 



The Wcddy Rorists^ Review* 



535 



F. R. Pienon Ca's WMte Lawson. 



hot water, the pressure under which it is 

 used, as well as the temperature desired 

 in the house to be heated. These factors 

 are variable and the problem of heating 

 a greenhouse is not an impirical rule of 

 thumb matter that can be stated in gen- 

 eral terms for all cases. 



In order, therefore, to intelligently 

 answer the question it would be necessary 

 to make a table giving the heating power 

 of a square foot of radiating surface for 

 hot water at various temperatures and 

 for steam at different pressures for the 

 different house temperatures to be em- 

 ployed ranging from 40 to 80 degrees, 

 the usual range through which various 

 greenhouse operations are carried on. It 

 is therefore much easier for the writer, 

 and infinitely more satisfactory for the 

 florist or gardener, to state a specific 

 problem than to attempt to state impiri- 

 cal rules to be followed in all cases. 

 Tables are given in Bailey's Horticultur- 

 ists ' Rule Book and in Taf t 's Greenhouse 

 Management, which state the number of 

 square feet of glass that can be heated 

 by one square foot of radiation for dif- 

 ferent temperatures, but even these tables 

 must be used with due allowance for ^ 

 latitude, exposure and a safety limit' 

 based on careless workmanship and im- 

 properly constructed and equipped boil- 

 ers. 



This problem of the most effective 

 economical means of heating greenhouses 

 is the most important problem in connec- 

 tion with commercial floriculture today. 

 By the use of inferior boilers and poorly 

 installed piping only a fraction of the 

 efficiency of the fuel burned can be se- 

 cured. This, taken in connection with the 

 gradually advancing price of fuel, ren- 

 ders this factor one of the most vital 

 economic factors in the maintenance of a 

 commercial plant. We may, by employ- 

 ing skilled gardeners and improved meth- 

 ods in connection with the best modern 

 greenhouse construction, increase the out- 

 put of the house, but if the fuel bill is 

 not looked sifter with equal care the busi- 

 ness may prove unremunerative. The 



Review is ready and willing to answer 

 all specific questions and^ as before 

 stated, I believe these will be more salt- 

 isfactory to the craft than will general 

 answers. 



Instead of stating the capacity of a 

 boiler in horse-power, it would be much 

 better to state the diameter and length 

 of the boiler, together with the number, 

 diameter and length of the flues and the 

 style of setting. These are positive 

 values, while horse-power in heating boil- 

 ers has little significance. Horse-power 

 depends upon pressure and is an accurate 

 measure where work is being done as in an 

 engine or pump. Roughly speaking, one 



horse-power is equivalent to 100 square 

 feet of radiating surface. A fifty horse- 

 power boiler, therefore, should be able to 

 carry 5,000 feet of radiation, an equiva- 

 lent of 11,500 feet of 1%-inch pipe. 



L. C. C 



TO CONTRIBUTORS. 



The increase in the size of the Re- 

 view, gratifying as it has been as a nmrk 

 of general appreciation, has brought 

 with it certain difficulties. It was once 

 possible to put in type on Wednesday, the 

 day of publication, a large part of all the 

 matter used in any given issue. To do so 

 now that so much more matter is print- 

 ed, would so encroach upon the time al- 

 lotted to press work, binding and mail- 

 ing as to seriously delay the delivery of 

 the paper. 



It is, therefore, desirable that in so- 

 far as possible contributors place their 

 matter in our hands on Tuesday, or, 

 better yet, on Monday. If each one will 

 each week make a little effort to this end 

 we shall then always be in a position 

 to handle matter which may occasionally 

 be belated. 



If advertisers, too, will bear in mind 

 that we would like * * copy ' * not later than 

 Tuesday, they will be helping us to give 

 them our best attention when circum- 

 stances make it desirable to change the 

 advertisement on Wednesday. 



Edinbueg, Ind.— Mrs. M. E. Woodard 

 has started in the florists' business here. 



Maetinsville, Ind. — Nixon H. Gano, 

 of the Martinsville Floral Co., reports a 

 very satisfactory business. He will put 

 in a new boiler in the spring. 



Lincoln, Neb. — ^F. W. Taylor, chief of 

 agriculture and horticulture at St. Louis, 

 was here last week. He is reported going 

 to E'urope as soon as World's Fair mat- 

 ters are closed up. 



Ithaca, Mich. — F. W. Brooke is plan- 

 ning to increase his facilities to keep 

 pace with the demand. He is having 

 a very satisfactory season. 



F, R, Piersoo Coh Variegated Lawson. 



