The New Encyclopaedia Britannica, Volume 29Encyclopaedia Britannica, 1974 - Encyclopedias and dictionaries |
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Page 18
... leaves are taken - lower leaves usually have less nicotine . There is con- siderable variation in commercial tobacco , but on average the dark , air - cured and fire- cured types contain 4 % to 42 % nicotine ; ci- gar filler and Burley ...
... leaves are taken - lower leaves usually have less nicotine . There is con- siderable variation in commercial tobacco , but on average the dark , air - cured and fire- cured types contain 4 % to 42 % nicotine ; ci- gar filler and Burley ...
Page 201
... leaves glaucous , not grass green , in colour , and the later leaves smooth and glaucous ; the root bears a distinct neck with well - marked leaf scars ; the flesh is firmer and more nutritious ; and the roots keep much better during ...
... leaves glaucous , not grass green , in colour , and the later leaves smooth and glaucous ; the root bears a distinct neck with well - marked leaf scars ; the flesh is firmer and more nutritious ; and the roots keep much better during ...
Page 697
... leaves turn pale or dull green , look water - soaked , curl upward , and often become yellowed or bronzed from the mar- gins inward ; the upper branches are usually affected first . White and bur oaks commonly die back slowly over ...
... leaves turn pale or dull green , look water - soaked , curl upward , and often become yellowed or bronzed from the mar- gins inward ; the upper branches are usually affected first . White and bur oaks commonly die back slowly over ...
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