Fig 19-42. A. Growth of the strawberry receptacle induced by one single fertilized achene. (Magnified three times.) B. Growth induced by three fertilized achenes. (Magnified three times.) Note the difference in size between the fertilized and the non-fertilized achenes. C. (Right), growth induced by three rows of achenes left in a vertical position, the others having been removed. (Left), control. D. (Left), strawberry having had all its achenes removed but two rows in a horizontal position. (Right), control. E. Strawberries of the sage age: (left), control (middle), strawberry which had all its achenes removed and replaced with lanolin alone, (right), strawberry which had all its achenes removed at the same time, but replaced by a lanolin paste containing 100 p.p.m. of beta-naphthoxyacetic acid. (After Nitsch)