National Geographic : 1917 Feb
cement patcn removea-snowng extensive ana neglected decay. Five typical letters from hundreds by satisfied Davey Clients. Mr. Geo. M. Verity, Pres. The American Rolling Mill Co., Middletown, Ohio. "The work which your men did on my premises has every evidence of being first class in every respect." Mr. T. W. Snow, Pres. T. W. Snow Construction Co., Chicago, Ill. "The work which you did at my place six or seven years ago is so satisfactory that I have not found it necessary to do anything more. Every tree you treated, including the worst ones, have since thattime made new and beau tiful trees." Mr. Edward Holbrook, Pres. The Gorham Co., New York City. "I wish to express the satis faction we have had in your work. The work has been done in a thorough manner and your foreman and his assistants are entitled to great credit." Mr. William H. Grafflin, Falston Manor, Glencoe, Baltimore Co., Md. "The work done at my place has been done in a very satis factory way and you are for tunatein havingsuch efficient and industrious employees, a refreshing experience in these days of carelessness and shirking." Mrs. Charles G. Weld, Brookline, Mass. "I am very much pleased with the result of your work on my trees . . . . From their present appearance I do not see why they should not last many years longer, whereas last year we had ,grave doubts as to their living." T HE tree is a living organism; it breathes, assimilates food, has a real circulation. Its normal condition is health, but it is subject to disease and decay, just as any other living thing. As with one's body or one's teeth, the tree responds only to that treatment which is in scientific accordance with Nature's laws. The physician, the surgeon, or the dentist requires years of patient study, plus the intuitive skill born of ripe experience, before he is equipped to obtain successful results. This is also exactly true in Tree Surgery. However, in Tree Surgery, scientific accuracy is not enough. Think of the terrific windstorm, with its bending and twisting ! You will then realize that Tree Surgery must be mechanically perfect to withstand it. The mechanical principles and methods of bracing employed by a real Tree Surgeon would amaze you. Facts little understood Because the facts set forth above have not been understood, great injury has been done to thousands of trees everywhere and a vast amount of money has been wasted in disastrous tree "patching." Photograph No. 1 illustrates a typical case of tree "patching." To the untrained eye this work probably looks good, but a Davey Tree Surgeon saw at a glance that the con ditions were bad. Growths of fungus disease appeared along the edges of the filling and on the bark between the large and small fillings. means had been provided to exclude moist ure; the large filling had been put in as a solid mass, making no allowance for the sway of the tree. Photograph No. 3 shows all decay removed by a Davey Tree Surgeon; the cavity thoroughly disinfected and waterproofed; the mechanical bracing partly in place; Photograph No. 2 shows the filling taken the watelliun cuL to exclude niuiSLUr out. Nearly every principle of the science Photograph No. 4 shows the Davey fi of Tree Surgery had been violated-the completed, put in sectionally to pe rough decay only had been removed; the swaying without breakingthe filling. cavity had not been disinfected; the con- tree has since stood through many se dition of decay behind this crude cement storms in perfect condition. New ba patch was actually appalling, and the filling now growing over the filling along had only been in two or three months; no edges. The tree has been saved bracing of any kind had been used; no manently! Davey Tre( Every real Davey Tree Surgeon is in the employ of the Davey Tree Expert Com pany and the public is cautioned against those falsely representing themselves. e. lling rmit This vere rk is the per ? "Mention the Geographic-It identifies you."