Rich County Reaper | 1935-01-18 | Page 5 | Nutation Twists Vines

twists 7 vines the tendency of f certain vinos vines to twist and bend is title due to a characteristic known as if the tend ncy to grow makes the change in form in the cases of hollow stem vines like the coining glory for instance tills this tendency or the stimulation of it travels around the stem stein with the result reit that the stem is con bantly twisting us it lengthens la in the case of cert certain liln plants such as the crocus and tho thil tulip tile the petals tire are very lNe lle to temperature changes whon when it Is warm warin the outer side of the petal peta grows faster caus ing tile the blossom to open but with lowered temperature the petals are drawn together this ot of course explains the opening and closing of the flowers night and morning