884 



HORTICULTURE 



February 21, 1914 



GREENHOUSE CONSTRUCTION 



AND HEATING. 



^Continued front page 2b8) 



that is, they are plastered and smooth 

 finished, or pebbled, dashed or rough 

 cast, as desired. This wall is neat 

 and durable when properly built. The 

 proper mixture for such walls is about 

 1:3:6. This is called by cement 

 workers an ordinary mixture, that is 

 in the proportion of one barrel o£ ce- 

 ment, three barrels of sand, and six 

 barrels of gravel or broken stone. The 

 cost of such walls, not including the 

 cost of sand and gravel, which is often 

 obtainable at the site, and usually at 

 very little cost near the site, is about 

 the same as the cost of double board- 

 ing with paper between. The concrete 

 walls, of course, do not require to be 

 painted three coats when erected, nor 

 extra coats every two or three years 

 thereafter. Concrete walls will not 

 burn nor rot as wooden walls do. The 

 best commercial houses are built with 

 one-half inch flat iron foot pieces, one- 

 half inch steel rafters,, galvanized 

 angle iron eaves plates, angle iron 

 purlins, and light cypress sash bars. 

 The strength of this house is in the 

 iron members, not in the wooden bars, 

 and they are therefore not any heavier 

 than is necessary for a good setting 

 lor the glass. 16 inches by 24 inches, 

 glass of "A" and "B" qualities is used, 

 and in large houses with high roofs, 

 "B" quality is generally satisfactory. 



Advantages of Large Houses. 



The superstructure of iron frame 

 ■greenhouses tor private use and for 

 commercial purposes is essentially the 

 same, and the larger houses cost less 

 per square foot to build and provide 

 a larger cubic contents than smaller 

 bouses. It is therefore advisable for 

 both classes that the houses be larger, 

 and it is just as incumbent on the 

 superintendent or gardener to con- 

 vince his employer that better results 

 •can be obtained in large houses at 

 lower cost than in small houses, as it 

 is for the commercial man to build 

 large for the same reason. 



For private purposes where no gar- 

 dener is employed, a 10 foot, 12 foot. 





Cleans a building: of Rats and Mice in 

 fihort time. ke«p8 it cleaned, for it is 

 always ready for use. Made of ^ralvanized 

 Iron, can't get out of order, lasts for years. 

 Larse number can be caught daily. Go to 

 Catcher niornini^s, remove device inside, 

 which only takes few seconds, take out 

 dead rats and mice, replace device, it is 

 ready for anotlier catch. Small piece 

 cheese is used, doing: away with poisons, 

 fatcher is 18 inches high, 10 inches di- 

 ameter. When rats pass device they die, 

 no marks left on them. Catcher is always 

 clean. One of these Catchers set in a 

 livery stable in Scranton, Pa., caught over 

 100 rats in a month. One sent prepaid to 

 any place in United States upon receipt of 

 $3. Catcher, 8 in. high, for mice only, pre- 

 paid $1. On account of shipping charges 

 being prepaid, remittance is requested with 

 order. H. I>. SWARTS. 



Inventor and Manufacturer, Scranton, Pa. 



\>^ 



"m 



To Get Profit 

 from Melons 



feed the soil what melons need 

 for normal growth, prompt ripen- 

 ing, full sugar formation and 

 rich flavor. These cannot be had 

 without plenty of available 



POTASH 



Avoid low-gr.ade mixtures. Supplement the compost with a 

 half tun to three quarters of a ton, per acre, of 5-6-10 gfxjds. 



You'll find, too, that Potash Pays, when used as above on cucum- 

 bers, pumpkins, squashes. 



We wilNsell any amount of Potash from one 200- 

 b. bag up. Write for prices and free books of formulas. 



GERMAN KALI WORKS. Inc.. 42 Broadway, New York 



Chicago, McCormicli Block Savannah Bank & Trust Bldg. 



New Orleans. Whitney Central Bank Bldg. 

 San Francisco, 25 California St. Atlanta, Empire Bldf. 



or 16 foot house will afford consider- 

 able pleasure to the owner who has 

 the time to work it, but such a house 

 is only a toy to a gardener. No house 

 should be built for a gardener's use 

 that is of less width than 18 feet. 

 20 feet is better, and 25 feet and 30 

 feet still better. The increase in cost 

 of these larger houses and in cost of 

 maintenance is very little comparat- 

 ively, or to put in another way, the 

 cost for the increased floor and bench 

 surface and increased producing abil- 

 ity, is much less than in smaller 

 houses. Greenhouses 50, 60 and 80 feet 

 wide are now being built daily all 

 over this country for commercial pur- 

 poses because our growers have at last 

 learned that if they would compete 

 with the leaders, they must build 

 large. 



Large houses are the cheapest per 

 square foot of surface covered and per 

 square foot of glass. They are the 

 lightest, and enclose the greatest vol- 

 ume per square foot of glass, which 

 means better air, stability of tempera- 

 ture, and better growing conditions 

 generally. In addition to this, the 

 first cost and the operating cost of the 

 heating system is less, and the labor 

 of working the house less than with 

 small greenhouses. 



The Heating Ap,>aratus. 



The most important part of the 

 greenhouse equipment is no doubt the 

 heating apparatus. The success of the 

 greenhouse depends much on its heat- 

 ing. I will, however, treat the sub- 

 jact but briefly. 



Greenhouses are warmed by radia- 

 tion from hot water pipes or steam 

 pipes. Each system has its advan- 

 tages and its disadvantages. Neither 

 system is best for all purposes, and 

 such conditions as size of the plant 

 and geographical location, conditions 

 of atmosphere, etc., must be consid- 

 ered before a dicision is made in favor 

 of either method. There are many types 

 of both hot water and steam systems, 

 but in both, the piping is constructed 

 into coils and single lines which are 



hung or supported on the sides of the 

 house under raised benches, on the 

 sides of solid beds, or on posts or col- 

 umns supporting the roof. The major 

 portion of the radiation should be on 

 the side walls. 



( To he continued) 



^^k«^ 



EianoteMl godsr the iDsectld^i Act 1910. Sirlit Ni. 321 

 Save your plants and trees. Just the thing for 

 Greenhouse and outdoor use. Destroys Mealy 

 Bug, Brown and White Scale, Thrip, Red Spider, 

 Black and Green Fly, Mites. Ants, Insects on 

 Rose-bushes, Carnations, etc. without injury to 

 plants and without odor. Used according to di- 

 rections our standard Insecticide will prevent 

 ravages on your crops bv insects. 



Non-poisonous and liarmless to user and plant. 

 Leading Seedsmen and Florists have used it with 

 wonderful results. 



Destroys Lice in Poultry Houses, Fleas on Dogs 

 and all Domestic Pests. Excellent as a wash for 

 dogs and other animals. Relieves mange. 



Eflectivc where others fail. 



% Piot - - 25c; Pint ■ - 40o: Qaart • - 75o 



% GalloD, IL25; Gallon. &2.00; 5 GJIod Can, S9 



10 Gallon Can . - &17.00 



Dilute with ivater so to $0 pa^ts 



For Sale by Seedsmen and Florists' Supply Hoases 



If you cannot obtain this from your supply house 



write us direct 



Lemon Oil Company Depi. K 



420 W. Lexington St., Baltimore, Md. 



Directio^ts on ^T^rv par kage 



4 Tons More. 11 Days Earlier 



(Canning tomatoes, per acre, at the In- 

 diana Experiment Station, 1012; see Bulle- 

 tin 165), from plants raised in DIBT 

 BANDS (sul)stitutes for clay pots), over 

 twice transplanted plants. 



Dirt Bands, 2, 2V., 3, 4, 5 and 6 Inch, 

 from 40c. to $1.50 per 1000. Samples of 

 all sizes and price list free. 



Square Paper Pots. 2, 2%, 3, 4 and 5 

 inch, from 75c. to $2.50 per 1000. Price 

 list free. 



Investigate! Inve.stiente! Investigate! 



F. W. ROCHEI-I.E * SONS, 



38 Main St., Chester, New Jersey. 



