পাতা:পদার্থবিদ্যাসার.djvu/১৫৭

এই পাতাটির মুদ্রণ সংশোধন করা প্রয়োজন।

146 earth, admit a free passage to those seeds that have been scattered upon its surface. Pup. How can we best judge when fruit is ripe Tut. By the colour, and by the fading of the stalk, or when with a gentle touch it is easily loosened from the branch. But suppose we now walk into the flower-garden—see, what a beautiful sight ! What astowishingly variegated colours How pleasing to the eye How fragrant to the smelt Pup. May I ask what are the parts of a flower which deserve attention ? Tut. They are the calyx, 1he corolla, the stamen, the pistil, the seed, the seed-vessel, and the receptacle. Pup. i {ave all flowers a caiy x ? Tut. No ; but very inany of them have, and in some it is perimanent till the seed is quite ripe; in others it falls off before the flower is expanded : and some flowers, as the lily, appear to have no calyx. Pup. W hat (to you meam by the coroIIa ? Tuł. The corolla consists of the leaves or petals, which form the blossom or flower. Pup. What are the stamina Ż Tut. They are those thread-like substances inside the flower, on which the farina remains. Pup. What are the pistils ? Tut. They are much like the stamina in form, but remain in the middle of the flower, and descend to the seed-vessel. y Pup. is the pistil found in the middle of all flowers?