20 



HORTICULTURE 



July 5, 1919 



THE 

 BOILER OF 



Unequalled Fuel Economy 



KroeNchell Boilers, the bent by tent since 

 1879. Forty years* experience. 



THE QUALITY PLACE OF BOSTON 



Regarding the Kroesehell, It Is the 

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 up especially quick and has saved us 

 considerably already In the price of 

 fuel. When we are in need of another 

 boiler we will give the Kroesehell the 

 first consideration. 



(Signed) WM. W. EDGAR CO., 



WAVERLEY, MASS. 



No Masonry — No Tubes 



TIMELESS BOILER 



Kroesehell Bros. Co., 



466 W. Erie St. 

 CHICAGO 



When You Buy Get a Kroesehell 



3,016,2841 sq. ft. of kIohh was equipped with 

 l\ mm -m hell Boilers during the year of 1016. 



OHIO'S CKLEBRATED CYCLAMEN 

 SPECIALIST 



After using your No. 12 Kroesehell 

 Boiler 1 came to the conclusion that 

 had I to install more boilers it would 

 be the Kroesehell and no other. It 

 really is a pleasure to heat, no trouble 

 to get the desired heat in a very short 

 time. 



(Signed) CHRIST. WINTERICH, 

 DEFIANCE, OHIO. 



Today is the day to 

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Box f. National Union Bnlldlnc 

 Washing-ton, D. O. 



Principles and Practice of Pruning 



By M. O. SAINS 



Lecturer on Horticulture, Columbia University 



Pevr practices In tbe handling »f plants, especially 

 fruit bearing' plants, attract so much Interest as do those 

 of pruning. The methods are so varied, the results so 

 diverse, and the opinions of growers so apparently con- 

 tradictory that this subject Is always one of tbe most 

 interesting, and tbe surest to hold attention and arouse 

 discussion. 



Particularly during the last ten er fifteen years when 

 the principles of plant physiology have been more and 

 more satisfactorily applied to plant production and man- 

 agement has Interest settled In pruning. During the 

 latter half of this time also more and more Investi- 

 gations and tests have been conducted by experiment 

 stations and other workers to test out methods and 

 principles in the Interest of science and for the benefit 

 of growers. The accumulation of such new knowledge 

 has become very considerable especially In the last de- 

 cade, but It Is necessarily so scattered that very few 

 growers have access to It, hence the demand for a book, 

 which shall present the really Important features of 

 these Investigations as well as set forth the fundamental 

 principles based upon the laws of plant growth. 



This volume Is lavlBhly Illustrated mainly by actnal 

 photographs of specimens which show good and bad 

 practices. Tbe author has spared neither time nor ex- 

 pense in gathering his photographs, each one of which 

 tells Its story. 



After a few pages of Introduction the author discusses 

 Plant Physiology as related to pruning. A chapter 

 takes up the Philosophy of Pruning, Itself a very In- 

 teresting subject. Then follows a classification and clear 

 discussion of Buds, very fully Illustrated from life. How 

 Wounds Heal Is an exceedingly Interesting chapter, as are 

 also those on Prevention and Repair of Mechanical In- 

 juries, Pruning Nursery Stock, Young Trees, Mature 

 Trees and Odd Methods of Pruning and Training, Re- 

 juvenating Neglected Trees and Practical Tree Surgery. 



Profusely Illustrated tW pages. H"l Inches. 

 Cleth. Hat, IB.M. 



lOKTirCLTXU rCBLISHDie CO 



141 T-sassn-T M 



Plant Propagation, Greenhouse 

 and Nursery Practice 



By M. G. KAINS 



We have had many Inquiries from time to time 

 for a reliable and up-to-date book on plant propa- 

 gation, but were always at a loss to find any pub- 

 lication that we could recommend. The subject 

 has been dealt with in fragmentary manner only 

 in books that have come to our notice. So It Is 

 well that this new work has been issued, espec- 

 ially as it is both comprehensive and practical, 

 and it should meet with a ready sale among 

 plantsmen, nurserymen and gardeners. There are 

 nineteen chapters covering in detail topics of ger- 

 mination and longevity of seeds, propagating by 

 buds, layering, cuttings, grafting, etc., fruit tree 

 stocks, scions, etc., and there are eight pages of 

 condensed cultural instructions in tabulated form, 

 covering annuals and pe/ennials from seed, 

 woody plants, evergreens, vines, bulbs and tubers, 

 greenhouse and house plants, ferns, palms, water 

 plants, orchids and cacti. The illustrations are 

 numerous, comprising 213 figures and halftone 

 plates. There are 322 pages well bound and on 

 heavy paper, teeming with helpful information. 

 It is a book which no cultivator can afford to do 

 without. It is worth many times Its price. Copies 

 can be supplied from the office of HORTICUL- 

 TURE at publisher's price, $1.50. 



HORTICULTURE PUBLISHING CO. 

 147 Summer St., Boston, Mat*. 



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