How mechanical bracing 

 restores strength to decayed trees 



TlIK intt^rual wooily tissue of the tree 

 has the same function as the bones in 

 the human body — structural support. 



When this has been destroyed by decay. 

 Nature Is helpless to restore It and the 

 tree. If negk-cted, will Hmiii sucruinli \>> tiif 

 force of the winds. And no treatment can 

 permanently save it unless that treatment 

 supplies scientifically the strength that has 

 been lost. 



Merely to fill the cavity with cement will 

 not answer. The violent swaying of trees 

 by the winds makes correct mechanical 

 bracing of decay-weakened cavities abso- 

 lutely Imperative. 



Correct mechanical bracing involves 

 something more than Just fixing bars and 

 bolts In the cavity. 



Every tree is different, and therefore the 

 bracing of each tree must differ from the 

 bracing used In all other trees, at least to 

 some extent. 



The tree In photograph No. 1, for ex- 

 ample, required a combination of bolts and 

 lock-nuts, reinforcing rods, and cross-bolts 

 with lock-nuts above the crotch. 



The tree In photograph No. 2 needed a 

 backbone and rib arrangement of Iron 

 straps, plus torsion rods and authors. 



The tree In photograph No. 3 required 

 a combination of bolts and criss-cross bolts 

 with lock-nuts, torsion rods and chains. 



The tree In photograph No. 4 was so 

 weak that It required a complicated and 

 complete system of Internal bracing. In- 

 cluding cross-bolts, criss-cross bolts, iron 

 straps, anchors, torsion rods, iron backbone 

 and ribs, lock-nuts, bolts above the crotch, 

 plus chains and lag-hooks higher up. 



1I111C.V Trcr ;SurKfoiis lire the only men In 



the world who lire reully trained 



for thiH work 



Every Davey Tree Surgeon Is trained 

 to the point of finished skill. He is al- 

 lowed no responsibility until he has con- 

 clusively demonstrated his fitness. 



Davey Tree Surgeons are the only Tree 

 Surgeons officially endorsed by the United 

 States Government, which engaged them 

 to save the priceless trees on the Capitol 

 grounds and elsewhere. 



They are the only Tree Surgeons en- 

 dorsed by thousands of estate owners — 

 prominent men and women whose recom- 

 mendations you can accept with complete 

 confidence. 



And they are the only Tree Surgeons who 

 arc backed by a successful and responsible 

 house, amply able to make good In every 

 Instance, and not needing, for the sake of 

 temporary existence, to sacrifice In the 

 Hll^htest degree Its high standards. 



Write today tor FREE examination of 

 your trees 



- -and booklet, "When Your Trees Need the 

 'i'ree Surgeon." What is the real condition 

 of your trees? Only the experienced Tree 

 Surgeon can tell you fully and definitely. 

 Without cost or ol>llgatlon to you. a Davey 

 Trie Surgeon will visit your place, and 

 niider an honest verdict regarding their 

 condition and needs. Write today. 



Three t.vpical letters out of hundreds re- 

 ceived from satisfied Davey cUente 



From Mr. Thomas Good-.viUif, SlaftJurd Oil 

 Company, Baltimorr,Md.: "The work that 

 your men have done on the forest trees on 

 my property at 205 Wendover Road, Gull- 

 ford, Baltimore, has been highly satisfac- 



tory, and as it appears now It will mean a 

 saving of four forest trees, which showed 

 marked symptoms of decline." 



From Mrs. //. »f. Straley, Washing:!,'!!. D. C, 

 and "Strahlf hurst," Princfton, It'. I'a.: "I wish 

 to thank you for the very splendid work 

 done, which Is decidedly worth while; also 

 to thank you Kiparately and Individually 

 for the splendid young men. They were 

 all skilled, conscientious workmen, an well 

 as kind, courteous gentlemen." 



From U. T. Hungerjord, V. T. HuHgerford 

 Brass &* Cof'/'er Co., tVcw York: "When you 

 took hold of the Job many of the trees were 

 in bad condition, and my Superintendent 

 tells me that if many of these trees had not 

 been treated by you, they would have been 

 blown .down during the gales last summer. 

 As it is, he dlil not li>se a slnele tree, due, 

 1 believe, to the treatment given them by 

 you." 



The Davey Tree Expert Co., Inc. 



130D Elm Street Kent, Ohio 



(Operftling (he Dftvey Institute of Tree Surgery) 

 Kranch offices, with telephone connection: 

 22.'> Fifth Ave, New York 

 2017 Laud Title Building, Philadelphia 

 450 .McCormiik Building, Chicago 

 I'ermauent representatives located at Bos- 

 ton, Newport, kenox. Hartford, Stamford, 

 .\lbany, I'oughkeepsle, White Plains, 

 .lamaica, L. I.; Newark, N. J.; Philadel- 

 phia, Harrisburg, Baltimore. Washington, 

 Buffalo, Pittsburgh, Cleveland, Detroit, Cin- 

 cinnati, Louisville, Chicago, Milwaukee, 

 Minneapolis, St. Louis, 

 Kansas City. /w* ' 



Canadian Address: 22 APy-'^ 

 Victoria Square, Mon- ' ^'' 

 treal. 



Davey Tree Surgeons 



Pf^D C^ITITTRFF QlTRf FRY ^■''"y"<''^'""y'^"'Surg,on is in ike mpkyofthe Davey Tree ExpmCo., 

 1 Vy*X kJ^-XM 1-1 1 IXI_il_i k7^IXvJl-ilX 1 and the public is caulioned against those falsely representing Ihfmselves 



