674 



The Weekly Florists^ Review* 



Januaby 17, 1907. 



The Standard 

 of Excellence 



7i Symbol of 

 Quality 



Our registered Trade-Mark covering THB CEIiEBRA.Ti:n C. O. B. POCAHONTAS SMOKBI.ES8 OOAI. 



corresponds to the Sterling Stamp on silver, as the United States Qeologlcal Survey has made it The Standard for 

 grading all Steam JTael. 



C. C. B. POCAHONTAS SMOKELESS 



/8 the only American Coal that has been officially Indorsed by the Governments of Great Britain, Germany 

 and Austria, and is the favorite fuel with the United Statoa Navy, which has used It almost exclusively 

 for many years. Uneqaaled for the Qeueratlon of Steam and Domestic Forpoaes. 



CASTNER, CURRAN & BULLITT, Sole Agents 



POCAHONTAS 



TRAOI MARK RIOMTiniO 



Branch Offices 



1 Broadway, New York City. N. Y. 

 Citizen's Bank Buildlnp, Norfolk. Va. 

 Old Colony Bulldinfr, Chicago, 111. 

 12t> State Street, Boston, Mass. 



O. O. B. Pocahontas Smokeless Coal 



Branch OflSces 



Main Office: Arcade BIdg. 



1 Seutli 1 5th Street 

 Philadelphia, Pennsylvania 



Neave Building-, Cincinnati, Ohio. 

 Terry Building-, Roanoke, Vt. 

 European Agts.— Hull, Blyth & Company, 

 i Penchurch Ave., London. E. C, Enf. 



Mention The Review when yoo write. 



Greenhouse Seating. 



THE MARKET FOR PIPE. 



The condition of things in the metal 

 trade is such that it is wise for any 

 grower who needs a quantity of pipe to 

 be looking about for his supply. The 

 mills are booked up with orders to carry 

 them past the season when growers will 

 want the pipe delivered and it does not 

 look as though pipe would be, at any 

 time this summer, cheaper than at pres- 

 ent. Indeed, the prospects are rather 

 that there will be an advance as the 

 season progresses. One of the largest 

 jobbers of pipe in the United States, who 

 supplies many greenhouse owners, says 

 that it is now, in the dullest part of the 

 year so- far as actual deliveries are con- 

 cerned, impossible to get all the pipe 

 needed of 1-inch, 1 14 -inch, li^-inch and 

 2-inch to meet actual demand, to say 

 nothing of carrying any considerable 

 stock on hand, as is usually done at this 

 season. He advises all buyers to place 

 orders now, or at least make known the 

 quantities which will be required during 

 the season, so that their needs may be 

 provided for. 



BOILER CAPACITY. 



Will you please tell me if a No. 5 

 Kroeschell boiler will heat three green- 

 houses 28x100; four feet at the sides 

 and twelve feet to the ridge? The sides 

 and ends are exposed. I want to heat 

 with hot water. Should I take two leads 

 from the boiler or one? I want to keep 

 my houses at 52 degrees when it is 20 

 degrees below zero outdoors. Will a 

 thirty horse-power steam boiler heat four 

 houses of the same size? H. E. R. 



The three greenhouses will require a 

 total of about 4,000 square feet of radia- 

 tion to maintain the temperature you de- 

 sire, without forcing. While the No. 5 

 Kroeschell boiler is rated at 4,000 square 

 feet of radiation and will take care of 

 this amount under conditions stated in 

 your inquiry, still the writer would ad- 

 vise considering the next size larger 

 boiler, namely a No. 6, capacity 4,500 

 square feet of radiation, which would do 

 the work more easily and with less at- 

 tention in the way of firing. This he 

 would especially recommend since the 

 difference in price between the two boil- 

 ers is but $20. 



Replying to your question as to the 

 capacity of a thirty horse-power steam 



THE JOHN DAVIS COIVIPANY 



H«lst«d, 22d and Union Sts., CHICAGO 



MANUFACTURERS OF 



Reducing Yalfes, Back Pressure Valves, Steam Traps, Steam Goods 



This Is what one of our customers thinks of our valves: 



Lincoln, III., January 8, 1U06. 

 Tint John Davis Compant, Chicago, 111. 



Gentlemen:— You can strongly and unhesitatinply recommend the 

 " Eclipse " piston type reducing valve to florists. We have two purchased 

 of you last year. We would not have them out for double their cost and 

 find them as sensitive as a watch. We will be In Chicago soon to take up 

 the vacuum system with you. Yours truly, 



W. H. OuLLETT & Sons. Florists. 



\fentlon The Review when yon write. 



Write Us Your Wants In 



Heating Specialties 



We supply everything needed for a 

 Greenhouse Heating Plant. Booklet 

 for the asking. 



HENION & HUBBELL 



61-6B N. Jefferson St., CHICAGO. 

 Mention The R eview when yon write. 



boiler, would say that a boUer of this 

 size would be the proper size for three 

 houses, 20x100, maintaining a tempera- 

 ture of 52 degrees in weather 20 degrees 

 below zero, but would not be sufficiently 

 large for four houses of that size. 



In reference to the main leads, would 

 state that the number of leads will be 

 determined by the positions; that is, if 

 your houses are so arranged that the 

 leads will be side by side, we would ad- 

 vise running from the boiler with one 

 large flowpipe of sufficient capacity for 

 the work. Should your boiler be located 

 in the center of the three houses we 

 would advise two flows. The same may 

 be said of the main returns. It is also 

 more economical to install, as well as 

 more practical, one large main flow and 

 return where this is possible. 



A UNIQUE NATURAL PRODUCT. 



One of nature's most wonderful and 

 unique products is asbestos, a material 

 now largely used for covering greenhouse 

 boilers and flowpipes to conserve heat. 

 Prior to 1850, it was looked upon prin- 

 cipally as a curiosity, although Charle- 

 magne (Roman emperor from 800 to 814 

 A. D.) is said to have had a table cloth 

 made of asbestos, which he cleaned by 

 throwing into fire. 



There are two varieties of commercial 

 asbestos, known as amphibole and chry- 

 sotile. The former is used only to a com- 

 paratively small extent, as the fibers are 

 short and without tensile strength and 

 are, therefore, not suitable for manufac- 

 turing many of the asbestos products. 



Mention The Review when you write. 



Amphibole is used to some extent in 

 cements, but is not well adapted even for 

 that purpose. Chrysotile, on the other 

 hand, has a strong and silky fiber, which 

 adapts it for such materials as asbestos 

 fabrics, household utensils, theater cur- 

 tains, clothing for*firemen, etc. 



In Germany, asbestos is known as 

 steinflachs (stone flax) and the miners of 

 Quebec give it quite as expressive a name 

 — pier re coton (cQttqn stone). * 



Asbestos is mined in open pits, similar 

 to stone quarries, and although it is 

 found in all parts of the world, the mines 

 in Quebec, Canada, are the most famous, 

 yielding eighty-five per cent of the 

 world 's supply of chrysotile. Probably 

 the largest of these mines is that owned 

 by the H. W. Johns-Manville Co., of New 

 York. In 1879 the output of the Quebec 

 mines was 300 tons, which has steadily 

 increased year by year to 50,000 tons in 

 1905. 



RETURNS TOO SMALL. 



Will you kindly assist us in locating 

 the trouble with our hot water heating 

 system? On the north side of the g^reen- 

 house are three 2-inch flows supplying 

 six 1^4 -inch returns. On the south side 



