An imincnse cavity in a jji.mt ii;ik 



tlif roots iifinin by iiilmiis oi tlit- ourcr or "rambiiim" 

 hiycr ol cflls lu-iwct-n the womfv Livlt :inil tltf bark, it 

 liurlils Li|) lu'w cells, incrt-flsiii); ilif );ri>\vrli nt tin.- trcL' 

 (-■iich yt-nr. This cxiiliiins why it is possibk-, in fx;ini- 

 iiiinfi a cmss-st-ctioii of tlic triLiik (if :i trvf, to ik-tcriiiini.- 

 I lie iitji.- hy tilt' ' aiiiiiilnr" lilies ol t^nm'ili. 



In lime the inner layers of ranibiiun cells become 

 woolly fiber aiul water - ducts, while those of the outer 

 layers form ihe fooil -coiiiiiii iiii[^ channels or "phloem" 

 just under the bark, 



7^his shows why a tree with a great cavity where 

 its heart onglit to be can jjrovv on ami live for years in a' 

 seeminnlv healtliy condition, putting forth its leaves 

 evcrv s|irin)i, increasing in size, and cvidemly enjoyinj: 

 irs lite, rile cavity does not interfere with the movc- 

 iiuiii of the sap, the btiilding up of new cambium cells 

 Mild the nil reasing growth ; hut, like a human being 

 with .III organic disease, the tree is liable to succumb to 

 [III- slli^hicst strain, and is cut ofi when it should be in 

 the very prime oi life. One branch of the Davey service 

 deals with these cases in such a way that, no tnatter 

 Imw badlv the tree is decayed (and very few are so far 

 i;iiiie that tliey cannot be saved) ir can be restored to a 

 i.ondi(ion of health, and Nature assisted to com|iiete a 

 perfect cure of the afllictiori. 



The pietiites in this book show j;raphically the 

 nietliods used in treating decayed trees hy the Davey 

 ex-perts and the results attained. Every vesti<;e of the 

 fungous growth is removed, ami the cavity is filled with 

 specially pri'|iared cement ill such a way that further dc- 

 cav is arrested. In a relatively short time new bark grows 

 over the cement, and tlie tree IS as sound as ever. 



I bis branch of Tree Surgery has received special 

 study, for i\'Ir. Davey soon learned in his practice that, 

 tirtless the cement were placed in the tree in such a way 

 tliat witter was prevented from getting behind it and 

 creating new decav, the object of the treatment was 

 defeatetl, and tlie iree w.is really in a worse condition 

 than beforf. I n Mvi-noiiie this he devised and patented 

 the "water-shed" which, being an exclusive feature of 

 the Davey methods, helps to make this service unique, 

 [lo] 



The tree opposite after tlie Davey treatment 



Ttie tree opposite as the Davey experts left it 



