19 19 



BETTER FRUIT 



, Page 23 



grees Baume. Chlorozene is the new 

 disinfectant now used extensively in 

 treating human wounds. 



It is well known that corrosive sub- 

 limate is a very powerful disinfectant 

 under certain conditions. In pure water 

 cultures it will kill readily most bac- 

 teria in a comparatively short time 

 when used at a strength of from 1 to 

 1000. It has been known for a long 

 time that its value is impaired by 

 organic matter, and especially by al- 

 bumins. In fact in the presence of 

 large quantities of organic matter it 

 forms inert combinations which reduce, 

 if not totally destroy, its value as a dis- 

 infectant. 



This probably explains our results 

 with corrosive sublimate as a disinfect- 

 ant on fresh wounds of pear trees. 

 These wounds are largely polluted by 

 organic matter, and under these condi- 

 tions corrosive sublimate is not thor- 

 oughly effective. 



Results With Cyanide of Mercury 



The treatment with cyanide of mer- 

 cury, in the foregoing experiment, 

 proved very effective. Not a single 

 treated wound developed blight. In 

 this experiment pure cyanide of mer- 

 cury was used at a strength of 1 to 500 

 (1 gram of pure cyanide of mercury to 

 500 grams of water). It is remarkable 

 that in all the other treatments blight 

 developed, whereas in the case of the 

 cyanide of mercury not the slightest 

 indication of the disease could be 

 found. The margins of the wounds 

 showed some injury from the treatment 

 in every case where the cyanide of mer- 

 cury was used. This injury was con- 

 fined to a narrow strip of bark around 

 the wound, and was of no special im- 

 portance, as the cambium soon started 

 to push out from underneath the in- 

 jured bark and continued to grow out 

 over the wound just as it does in nor- 

 mal wounds where no injury has been 

 produced. 



Cyanide of Mercury at Other Strengths 

 In the later experiments it has been 

 found that cyanide of mercury is not 

 always effective when used at a 

 strength of 1 to 1000. WTiile some of 

 the wounds on which this strength was 

 used did not develop blight, in a num- 

 ber of cases the disease did develop. 

 Hence, it is not safe to use this material 

 at this weak strength. Experiments 

 will be conducted to determine the 

 weakest strengtli that will be effective 

 in all cases. 



Experiments have been conducted to 

 determine what strength of cyanide of 

 mercury causes injury on the wounds 

 iif pear trees. It has been found that a 

 strength of 1 to 300 causes severe in- 

 jury. For this reason it should not be 

 used stronger than 1 to 500. 



Cyanide of Mercury Not Effective on 

 Tools 



Experiments have also been con- 

 ducted to determine the value of 

 cyanide of mercury as a disinfectant 

 for the metal tools used in blight- 

 control work. The results have been 

 surprising to say the least. A drop of 

 blight ooze was smeared over the blade 

 of a steel knife, which was then im- 



Corrugated Joint Fasteners 



Make Strong 2-Piece EndJBoxes. 



ACME STEEL 



Acme Patented Divergent Saw Edge Fasteners will not ^^^ rf*-r»« ■*»*■»■« 



pull out and holds better than cleats or glue. BOX STRAPPING 



Write near- 

 est office 

 for samples 

 and prices. 



ACME 



Strapping 



protects 



goods 



from 



damage 



and 



pilferage. 



Specify ACME CORRUGATED JOINT FASTENERS. ^ W 



ACME STEEL GOODS CO., Mfrs. 



Works: 2840 Archer Avenue, CHICAGO 



Branch and Warehouse: 209 California Street, San Francisco, and Seattle 



Warehouse Only: Holman Transfer Co., Portland, Ore. 



Diamond CHICK FOOD 



SAVES LITTLE CHICKS and 



helps them to grow into big, strong, healthy birds. 



^ A clean, •wholesome, natural food — no dust — no waste. 

 Keeps the chicles healthy and makes them grow fast. 



^l^'Lool( for our Name and Trade M ark on Ever}) Original Package 



OUR 1919 CATALOGUE 



Of "Diamond Quality" Poultry Supplies, listing 

 everything necessary for the profitable production of poultry 

 mailed free on request. Ask fot Catalog No. 202 



"BUCKEYE" Incubators and COLONY Brooder Stoves 



W. W. BOLLAM 



BOLLAM & CO., Inc. 



SUCCESSORS TO 



Dryer, Bollam & Co. 



General Commission Merchants 



Phones: Main 2348 

 A 2.348 



128 FRONT STREET 



PORTLAND, OREGON 



WHEN WRITING ADVERTISERS MENTION BETTER FRUIT 



