32 



BULLETIN 227, U. S. DEPARTMENT OF AGRICULTURE. 



Table IV. — Toxicity of various preservatives to certain ivood-destroying and other fungi — 



Continued. 



Toxic substance. 



Organism. 



Toxic point. 



Culture 

 medium. 



Duration of 

 test. 



Investigator. 



-INORGANIC COM- 

 POUNDS — con. 



Ammonium fluorid 



Copper fluorid [CuF 2 + 



2H 2 0], pure. 

 Copper siiico-fluorid [Cu- 



SiF 6 ], pure. 

 Copper sulphate [CuSO-i-f- 



5H.O]. 



Copper sulphate 



Ferric fluorid [FeF3] 



Ferric sulphate [FeSO-t-f- 



7H 2 0]. 



Ferrous fluorid [FeF2] 



Hydrofluoric acid [HF], 



i00 per cent. 



Hydrofluoric acid 



Hydrofluorsilicic acid [H2 



SiF 6 ]. 



Hydrofluorsilicic acid 



Magnesium silicofluorid 



[MgSiF 6 +6H 2 0], 95 per 



cent. 

 Magnesium sulphate 



[MgS0 4 +7H 2 0]. 

 Mercuric chlorid [HgCl 2 ]. . 

 Potassium fluorid [KF], 



pure. 



Potassium fluorid 



Sodium chlorid [NaCl] 



Sodium chlorid 



Sodium fluorid [NaF] 



Sodium fluorid, tech. re- 

 fined. 



Sodium fluorid 



Sodium fluorid, tech 



Do. 



Sodium carbonate [Na?- 



C0 3 ]. 

 Sodium siiico-fluorid 



[Na 2 SiF 6 ], about 100 per 



cent. 



Sodium siiico-fluorid 



Zinc chlorid [ZnCl 2 ] 



Zinc chlorid 



Do. 

 Do. 

 Do. 



Zinc chlorid, commercial. 



Do 



Zinc fluorid [ZnF 2 ] 



Acid zinc fluorid, tech. . . 

 Acid zinc fluorid [ZnF2- 



HF]. 



Zinc siiico-fluorid 



Zinc siiico-fluorid [Zn- 



SiF 6 +6H 2 0]. 

 Zinc sulphate [ZnSO<+ 



7H 2 0]. 



B.— ORGANIC COMPOUNDS. 



(a) Benzol and phenol de- 

 rivatives. 



AnilinlC'cHiNn;:].... 

 Cresol[C 6 H4CH 3 OH]. 

 Cresol 



Do 



Do 



Cresol, pure 



Cresol calcium 



Do. 



I):.. 



Coniophora cerebella. 

 do 



.do. 

 .do. 



Per cent. 



0.123 



Under 0.1... 



Under 0.05.. 



Under 1 



Molds 



Coniophora cerebella. 

 ....do 



3 to 5.... 



0.132 



Under 2. 



.do. 

 .do. 



..do. 

 ..do. 



0.155 



Under 0.01 . 



0.05 



Under 0.05. . 



.do. 

 .do. 



0.120 



Under 0.067. 



.do Over 16. 



.do ' Under 0.1... 



.do ! Under 0.05.. 



....do 



....do 



Mold 



do 



Coniophora cerebella . 



....do 



Fomes annosus. 



0.192 -. 



Under 10.. . 



Over 5 



2 



Under 0.1.. 



0.139. 

 0.25.. 



F. pinicola 



Coniophora cerebella 



do 



.do. 

 .do. 

 .do. 



Lenzites sepiaria 



Polystictus hirsutus. 



P. versicolor 



Fomes pinicola 



F. annosus 



Coniophora cerebella 



....do 



....do 



.do. 

 .da. 



.do. 



Coniophora cerebella . 



do 



Lenzites sepiaria 



Polystictus versicolor 



P. nirsutus 



Penicillium 



Coniophora cerebella. 



Lenziles sepiaria 



Polystictus versicolor 



0.15 



Under 0.125 



Under 0.1. 



0.208 



Under 0.5... 

 Between 1 

 and 2. 



do 



do 



Over 2 



0.75 



0.5 



0.186 



Under 0.1... 

 0.130 



0.159 



Under 0.1... 



Under 1. 



Under 1 



Under 0.125 



do 



do 



Under 0.25. 

 Under 0.05. 

 Between 1 



and 2. 



Over 2 



Between 1 



and 2. 



Gelatin . 

 Agar... 



..do..... 



..do...., 



Gelatin 

 ..do.... 



Agar... 



Gelatin 

 Agar... 



Gelatin 

 Agar... 



Gelatin 

 Agar... 



.do. 



...do.... 

 ...do.... 



Gelatin. 

 Agar... 

 Gelatin. 

 ...do.... 

 Agar... 



Gelatin. 

 Agar... 



..do.. 

 ..do.. 



..do. 



Gelatin. 

 Agar... 

 ...do.... 



...do... 

 ...do... 

 ...do... 

 ...do... 



..do.... 

 Gelatin. 

 Agar . . . 

 Gelatin. 



..do.. 



Agar. 



.do. 



Agar. 

 ...do.. 

 ...do.. 

 ...do.. 

 ...do.. 

 ...do.. 

 ...do.. 



.do. 

 .do. 



4 weeks 



8 to 10 days. 



....do 



....do 



14 days 



4 weeks 



8 to 10 days. 



4 weeks 



8 to 10 days. 



4 weeks 



8 to 10 days. 



4 weeks 



8 to 10 days . 



.do. 



.do. 

 .do. 



4 weeks.... 

 8 to 10 days. 



14 days 



....do 



8 to 10 da vs. 



4 weeks . 

 ....do.. 



5 to 7 weeks. 

 10 days 



S to 10 days. 



4 weeks 



8 to 10 days. 

 8 davs 



... do 



do 



do 



4 to 8 weeks. 



5 to 7 weeks. 



4 weeks 



5 to 10 days. 

 4 weeks 



....do 



S to 10 days. 



....do 



8 to 10 days. 



S davs 



do 



do 



do 



4 weeks 



8 days 



.do. 

 .do. 



Netzsch. 

 Falck. 



Do. 



Do. 



Malenkovic. 



Netzsch. 



Falck. 



Netzsch. 

 Falck. 



Netzsch. 

 Falck. 



Netzsch. 

 Falck. 



Do. 



Do. 

 Do. 



Netzsch. 



Falck. 



MalenkoviS. 



Do. 

 Falck. 



Netzsch. 

 Humphrey and 

 Fleming. 

 Do. 

 Rumbold. 



Falck. 



Netzsch. 



Falck. 



Rumbold. 



Do. 

 Do. 



Do. 

 Humphrey and 

 Fleming. 



Do. 

 Netzsch. 

 Falck. 

 Netzsch. 



Do. 

 Falck. 



Do. 



Falck. 

 Rumbold. 



Do. 



Do. 



Do. 

 J. M. Weiss. 

 Rumbold. 



Do. 

 Do. 



