Injury to vegetation and animal life by smelter wastes . y^ff^ r^^f^. ^. Fumigation Chamber for Testing Effects of Sulphur Dioxid on Young Trees. SULPHUR-TRTOXID CONTENT OF FOLIAGE. 11 Xo. 5292. WJiilc oak.—Buinij^alcd KJ times from July 20 to . 24 with sul-phur dioxid 1: ]0,000. After 2 fumigations brown spots appeared on the 5 fumijjjations the top leaves were dry and brown. After l^J fumigationsall the leaves were dry and brown. The control plant was uninjured. No. 029.). Scrub pine.—Fumis^ited twice on July 2.) with sulphur dioxid1:10,000. After 2 fumigations all the leav
Injury to vegetation and animal life by smelter wastes . y^ff^ r^^f^. ^. Fumigation Chamber for Testing Effects of Sulphur Dioxid on Young Trees. SULPHUR-TRTOXID CONTENT OF FOLIAGE. 11 Xo. 5292. WJiilc oak.—Buinij^alcd KJ times from July 20 to . 24 with sul-phur dioxid 1: ]0,000. After 2 fumigations brown spots appeared on the 5 fumijjjations the top leaves were dry and brown. After l^J fumigationsall the leaves were dry and brown. The control plant was uninjured. No. 029.). Scrub pine.—Fumis^ited twice on July 2.) with sulphur dioxid1:10,000. After 2 fumigations all the leaves were brown, dry, and dead. Th«?control plant was uninjured. Ao. 5206. Black oak.—Fumigated 100 times from August 5 to August oO withsulphur dioxjd, 1: 50,000. After 21) fumigations the gloss disappeared from theleaves and the young leaves took on a grayish tint. After 100 fumigations allthe end buds were Ivilled. The younger leaves were bleached and dotted withbrown spots. The old leaves had lost their gloss and were bleached in tree was observed
Size: 1432px × 1745px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, bookpublisherwashingtongovtprin
