rtU.] New Patents. 3D7 



appearance, which is generally early in the spring, by exuding a 

 white floculent cotton like substance upon such of the rough knotty 

 surfaces of the bark as have afforded it shelter during the winter, 

 I take the first opportunity of examining my trees, and with a 

 pruning-knife cut away all the dead barks from the parts affected, 

 and then immediately cover the wounds by means of a painter's 

 tool brush, with a kind of paint composed of oil of tar and yellovr 

 oker, mixed to the consistence of cream. I also proceed in like 

 manner to cover such other parts as may be likely to harbour the 

 insect, or to be subject to its attack. The effect of this operation 

 is immediate and lasting, for the extremely pungent and pene- 

 trating property of the oii of tar (being an essential oil) is such, 

 that it instantly insinuates itself tlirouj;;!! the cracks and fissures of 

 the bark, and thereby effectually destroys both insect and ova 

 in its most secret recesses, without in the smallest degree injuring 

 the tree, and for some months secures the parts from future attack. 

 The application may be used at all seasons, and by the addition 

 of a little lamp black may be readily made to correspond in colour 

 with the bark of the tree, so as not to become at all offensive to the 

 eye. It is indeed so convenient a medium of defence against the 

 bad effects both of insects and the weather, that I constantly use it 

 after the knife on all occasions. 



Your obedient Servant, 



Richard Knight. 



Clapton, April 20, 1814. 



P. S. As the oil of tar is not in general use, it may be desirable 

 to know, that it may be procured of D. Hawkins, oilman, 88, 

 Bishopsgate Street without. 



Article XII. 



New Patents. 



Jamics Jameson, Colebrook-terrace, Islington ; for certain im- 

 provements in the construction of fire-arms, and the locks of fire- 

 arms. March 9, 1814. 



Damkl Gf)ODAi-L, Burton Latimer, Northampton; for manu- 

 facturing of English enipcs from silks dyed and coloured, both 

 before and after they are thrown or spun into crape, silk, or silk 

 for the manufacturing of crape, and introducing, weaving, or work- 

 ing into the warp and sluite of such crapes, black, white, coloured, 

 and fancy silks, and also Ijlack, white, coloured, and fimcy cottons 

 and worsted", and al^so gold and silver, and every other description 

 of pliiin <jr fancy materials. March 12, 18!4. 



Andiijjw Cook, Strand, London ; for an invention for the pre- 

 vention and cure of the dry rot and common decay in timber; and 



J 



