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NOTICES OF AUTHORS. 



the mode by which his composition performs the 

 wonders for which he gives it credit. It is impos- 

 sible, by any salve, to promote discharge from the 

 bare alburnum, though cut into the vital part, to 

 form, or assist in the formation, of bark ; and the 

 sum of the resulting advantages consists in prevent- 

 ing the vitality from becoming extinct far inward 

 from the section (as under the best management to 

 a certain extent it will become so), by an antiseptic 

 cover from the drought and moisture, heat and cold; 

 in promoting the spread of the juices from the edge 

 of the bark over the bared part by exclusion of 

 drought, and by forming a defence against insects. 

 W e have found a paste of pm-e clay, wTought up 

 with some fibrous matter, as chaff or short hay, an 

 excellent cover for tree wounds, applied in spring or 

 early summer, w^hen dry weather followed the ap- 

 plication ; but in autumn or mnter, and when moist 

 weather followed, the clay, by remaining wet, only 

 served to induce corruption. We think this clay 

 paste (probably benefited by a pow^dering of char- 

 coal on the inside) the best application when applied 

 in spring. We have seen a terminal cross section, 

 of about one inch diameter, of a long branch, co- 

 vered quite over in two months with bark when 

 clayed; and a tree of three inches in diameter, from 



