March 16, 1918 



HOKTICULTURE 



369' 



THE PFALTZGRAFF POTTERY CO., York, Pa. 



Manufacturers of Florists' Pots, Bulb Pans, Fern Dishes, etc. 

 WE LEAD IN QUALITY, FINISH AND SERVICE 



For Catalogues aod Discoants address 



AUGUST ROLKER & SONS, 51 Barclay Street, NEW YORK CITY 



Our Selling Agents in N. Y., N. J. and Eastern States Territory 



HYDROCYANIC-ACID GAS AS A 

 GREENHOUSE INSECTICIDE 



By the carel'ul use of hydrocyanic- 

 acid gas, practically all insects infest- 

 ing the foliage of ornamental plants in 

 greenhouses may be controlled more 

 cheaply and effectively than by any 

 other means, according to a bulletin 

 just issued by the United States De- 

 partment of Agriculture, "Fumigation 

 of Ornamental Greenhouse Plants with 

 Hydrocyanic-Acid Gas," by E. R. 

 Lasscer and A. D. Borden. It is 

 pointed out, however, that in fumigat- 

 ing a greenhouse containing a large 

 variety of plants, even when using the 

 correct quantity and under just the 

 right conditions, there is risk that the 

 tender growth of some plants may be 

 injured. This injury is not perma- 

 nent, however, and such plants will 

 show new vigorous growth in a short 

 time. The growth of many plants is 

 stimulated by hydrocyanic-acid gas. 



The chemicals required for the fumi- 

 gation are sodium cyanid containing 

 not less than 51 per cent, cyanogen, 

 or potassium cyanid containing not 

 less than 38.4 per cent, cyanogen, sul- 

 phuric acid 93 per cent, pure and 

 water. Cyanid for fumigation pur- 

 poses should be practically free from 

 chlorin. 



PHECAUTIONS TO BE TAKEN. 



Fumigation should not be attempted 

 in daylight, or when the temperature 

 in the house is below 50 degrees F. or 

 above 70 degrees F. Cyanid Is one 

 of the most poisonous substances 

 known and extreme care must be used 

 In its handling. The chemicals must 

 not be within reach of those unac- 

 quainted with their nature, and must 

 always be plainly labeled. Among 

 other measures of care are the follow- 

 ing: Chemicals should be handled 

 preferably with old gloves used for no 

 other purpose; the acid must not 

 touch clothes or skin. The water must 

 not be poured on the acid; put the 

 water in the generator first and then 

 the acid. The person who places the 

 cyanid In the water and acid must 



FOR SALE 



FOn SALE.— Property consisting of 

 greenhouse nnd residence located on Ash- 

 land Street, Roslindale. near Calvary Ceme- 

 tery. A fine opportunity for investment. 

 Address I.. Pfennig, 380 Ashland St., Ros- 

 lindale, Mass, 



GREENHOUSES FOR SALE. 



Two 15 X flO ft. ; one 15 x 75 ft. ; one 17 x 64 

 ft.; stocked with violets and one small 

 Propagating House. Three acres choice 

 land. House of 8 rooms and liath. Electric 

 lights, cltv water, hot water heat for all. 

 Price $.5,500, worth $8,000. Located at 

 Westboro, 12 miles from Worcester, Mass., 

 on electric line. Apply to ARTHUR 

 GEORGE, Florist, Westboro, Mass. 



DREEIR'S "Riverton Special" Plant Tubs 



No. Dlam. Ea. Doz. 100 

 10 20 In. $2.75 $30.00 $2:i0.U0 

 20 18 In. 2.25 24.00 100.00 

 30 16 In. 1.75 lU.OO 152.00 

 i to 14 In. 1.50 17.00 135.00 

 M 12 In. 1.00 11.00 88.00 

 I liO 10 in. .70 7.75 62.00 

 _ ^70 8 In. .55 6.50 50.00 

 The Rlvertun Tub is Bold exclusively by u», and is the best ever introduced. 

 The neatest, lightest and cheapest. Painted green and bound with electric-welded 

 hoops. The four largest sizes are equipped with drop handles. 



HENRY A. DREER, s»e<s. punts, buius, ami sofptes, 714.716 chestHUt St., P1iiladelpliia,Pa. 



leave the greenhouse immediately, 

 and persons must never enter a fumi- 

 gated house until it is thoroughly 

 aired. To insure this, some arrange- 

 ment must be provided by which the 

 ventilators can be opened from the 

 outside. Danger signs must be posted 

 at all entrances, and the house tightly 

 closed before the fumigation begins, 

 and a greenhouse adjoining a dwelling 

 should not be fumigated without pre- 



viously notifying the residents of the 

 dwelling. 



These precautions and others, to- 

 gether with a fumigation table which 

 tells the quantities of chemicals to be 

 used for various insects on a great va- 

 riety of plants, are given in Farmers' 

 Bulletin 880, which will be sent free 

 on request from the United States De- 

 partment of Agriculture at Washing- 

 ton. 



CLASSIFIED DIRECTORY 



Advertisements in this Department, Ten Cents a Line, Net 



BULBS 



C. KEUR A SONS. UILLEQOM, Holland. 



Bulbs of all descrlptluui. Write tor price*. 



NEW YORK BRANCH, 8-10 Brid(e St. 



CARNATION STAPLES 



Split carnatluus quickly, eailly and 

 cheaply mended. PUlBbury'i Carnation 

 Staple, 1000 for 35c.; 30OO for $1.00 post- 

 paid. L L. PILLSBURY. Galeabart. IlL 



CHRYSANTHEMUMS 



GOOD RETURNS WITHOUT THE COST 

 OF COAL. 

 WITHIN THE BEACH OF EVERY 

 GROWER. 

 PLANT EARLY CHRYSANTHEMUMS. 

 Such as will mature before the last of 

 October. We are booking orders fur de- 

 livery now or later as desired. Complete 

 list of the best early, both Pompons and 

 large flowering supplied upon request. If 

 our 191s Trade List has not reached you, 



ELMER D. SMITH & CO., Adrian, Mich. 



DAHLIAS 



Peony Dahlia Mrs. Frederick OrlnnaU. 



Stock For Sale. 



JOHN P. ROON KY. New Bedford. Maaa. 



Order! booked at any time for Vail or 

 Spring delivery. Wholesale and Retail. 

 Send for Catalog. NORTHBORO DAHLIA 

 * GLADIOLUS OARDBNS, J. U lleon. 

 Prop.. Northboro. Mass. 



New Paeony Dahlia — John Wanamakar, 

 Newest, Handsomest, Best. New color, naw 

 form and new habit of frrowtb. Big stock 

 of best cut-flnwer varieties. Send list of 

 wanta to PEACOCK DAHLIA FARUS. 

 Berlin. N. J 



New and rare Cactus and Peony Dahlias, 

 100 named varieties, many unobtainable 

 elsewhere. Correspondence only. No cat- 

 alogue. Mixed lot. identity lost, .lOc, $3.00 

 doz. F. E. TAYLOR, 121 WUdwood Ave., 

 Upper Montclair, N. J. 



GLASS 



Qreenhonse glass, lowest prices. JOHN- 

 STON GLASS CO.. Hartford City. Ind. 



GLADIOLI. 



SEND FOR MY SPECIAL TRADE LIST 

 OF GLADIOLI. ALL THE LEADING VA- 

 RIETIES IN DIFFERENT SIZES. 



CENTRAL GLADIOLUS GARDENS. 

 JELLE RODS, MILTON, MASS. 



ORCHIDS 



HASSALL & CO., Orchid Growers and 

 Raisers, Southgate, Loudon, England. Catt- 

 leyas and Laelio-Cattleyas our specialty. 

 One trial order solcited. 



PAPER POTS 



Paper Pots and Dirt Bands. Send for 

 Samples and Prices. P. W. ROCHELLE 

 & SONS, Box 65, Chester, N. J. 



PEONIES 



Peonlea. The world's greatest colleetlon. 

 1200 sorts Send for list. C. BBTSCHBB, 

 Canal Dover, O. 



ROSES 



ROSES, CANNAS AND SHRUBS. 



THE CONARD & JONES COMPANY, 



WEST GROVE, PA. 



SPHAGNUM MOSS 



Live Sphagnnm moss, orchid peat and 

 orchid baskets always on hand. LAOBS 

 & HI'RRKLL. Summit. N. J. 



STRAWBERRIES 



Strawberry Plants. Money making va- 

 rieties. Catalogue Free. BASIL PERRY, 

 Georgetown, Delaware. 



VINB8 



Flowering and Foliage Vlnea, ehole* 

 collection. Large Specimen, Pot and Tnb 

 grown for Immediate effect; also Climbing 

 Roses. J. H. TROY, Mount HlssarlU Nor- 

 sery, New Rocbelle. N. Y. 



WIRE WORK 



WILLIAM E. HEII-SCUKR'i WIUB 

 WOBKS, 264 Randolph St.. Uetralt, Mtak. 



