140 Report of State Board of Horticulture. 



Board of Horticulture at Salem, Oregon, October 15, A. D. 1895. 



At a regular meeting of the Oregon State Board of Horticulture, held 

 October 14, 1907, Eule 8 of the Quarantine Regulations of the State Board 

 of Horticulture was amended so as to read as follows: 



All trees, plants, grafts, buds or scions grown in the State of Ore- 

 gon and offered for sale within the State, and all such trees, plants, grafts, 

 buds and scions grown out of the State of Oregon, and sold within the 

 State for planting and propagation, shall be disinfected either with hy- 

 drocyanic acid as follows: Said trees, plants, cuttings, grafts, buds or 

 scions shall be covered with an air-tig<ht box or house, and for each and 

 every 100 cubic feet of space therein one ounce of chemically pure cyanide 

 of potassium (93 per cent), one fluid ounce of sulphuric acid and two 

 ounces of water shall be used. The cyanide of potassium shall be placed 

 in an earthenware vessel, the water poured over the said cyanide of po- 

 tassium, afterward adding the sulphuric acid, when the box or house m^lst 

 be immediately closed tightly and allowed to remain closed for not less 

 than forty minutes, or instead of such fumigation such trees, buds or scions 

 may be dipped in a standard solution of lime and sulphur -of the strength 

 required for winter use in spraying San Jose scale. 



