Sept. 23.—At this time of the year we begin to think a little about plants for the house during the, Winter, so a few remarks about plant containers ray not be out of place. "Most of us have a traditional belief in-the virtues of the However, the growing of plants in is a different matter and the porous flower-pot is not such a useful article for this work. Much experimental work has been carried out with a view to providing a proper container for plants growing in the house during the Winter as it is common knowledge that when rare taken into a heated ai it. Some their vitality quickly, and others die despite constant attention to watering and the. provision of as much sunlight as is necessary for the plant in ordinary circumstances. Many of us noticed that when plants are.growing in containers such as are generally placed flower baskets, they have a longer life' those growing in ordinary pots they were not Wale rara g0 apa reң! ai: in a heated ai of the pot becomes a defect instead the upper portion of the soil in quite wet, but that portion of sides of the ppt is often bone-dı of the feeding roots of the around the inside of the to suffer. This that rooms heated by hot air have ture content and evaj from a kiln-dried soil. immediately, inside 3 watering may be considered sufficier any loss of moisture, but in 3 not so, for the pot, being es 5 half of the water given. To stand int
it is in a waterlogged better than kiln-dried li iai li proportion that an diameter of the sun (about odds against a direct hit are about a million to one.
However, when the nucleus of an atom is hit, the fragments of the collision fly out at tremendous speeds at night atoms, perhaps. smashing them in the process to set Up a chain of reactions and release a flood of us-
The manner in which atoms are smashed becomes more understandable if a study of an Westinghouse Company at East Pittsburgh, Pa., electrostatic type of instrument built is made.
In the steel "pear" or pressure tank is located the apparatus for making and firing the nuclear "bullets" while in the two-story brick building at the base are auxiliary devices, the tar-
electric charges are carried from a generator measuring and the recording devices. of. the tank by two belts running up to the electrode at the top where the charges accumulate on its outer surface, establishing a high potential between electrode and ground.
In the electrode an arch discharge is main tained in hydrogen: This produces hydrogen trong, and deuterons, which are double weight ions, ie. hydrogen. atoms minus their elec' developed by the high voltage. 5 Such a source always produces a mixture of several kinds of ions, so the beam is passed Letween the of an analyzing magnet, Here the. lightweight ions are deflected than the heavy ions and the kind comes out' of one of the analyzing chamber. Here they strike targets, and here the atom smashing occurs.
Text read from the printed page and cleaned; old type leaves the occasional error.