CONE NEES: 
duction. i Ss M8: 
Process of exiting euetale rong ORES eae aes. eae SRR Rein ouae sR ten ae ta 
re Sula mE mWASt@ Rees emcuari me renga ae Cie meCrs sve cesialnne c Sas WM! Ue eh ahaa ey 
Experimental investigations relating to the action of sulphur dioxid on vege- 
Organs of plants through which injury takes place.-......-.....----.----- 
Amount of suiphumdioxid that may cause 1mjury. 2+ .2.-.2--...- 252-2... 
Sulphur trioxid content of the foliage of fumigated and unfumigated 
Field investigations of the action of sulphur dioxid fumes on vegetation . ....- 
A California smelter and certain foreign smelters.......:.....---.---.-- 
MOMenmesseeysmeliersetes cna Ratc nckee esse ace dete ges eae ee 
First investigation of injury by smelter wastes around Anaconda, Mont., 1906-7. 
Location of smelter and appearance of surrounding vegetation.......-.-..- 
Sulphur trioxid in foliage of trees around Washoe smelter.......-..------ 
Injury to cattle by arsenic in the vicinity of Washoe smelter . : 
Injury to crops and soil by tailings and slag from the iealnne Peaaerion 
FPA Cc oS Eg Bes Gg eet Stet fears he er ai ee ce ea 
Second investigation of injury by smelter wastes around Anaconda, Mont., 
WOOD) ge RE Ee Nee cy a ye ge ea 
Appearance of vegetation surrounding smelter......-....-.--..--------- 
Sulphur trioxid in foliage of trees around Washoe smelter........-..----- 
Arsenic content of forage crops around Washoe smelter...-.......-------- 
Menioadsoranalysis used 1m imvestigations!. .-... 2252... .4. 02.25.22 <..0-22 52 
Ria eRe OMAPUCE SMe. co ier Fe YE Seapets 9 Meek Bos Ure oo Slee 
TER 2 na no Dat oe al ce erat a a Incite el eC a Ee aE 
