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Show Where Science Will Tell All About It be under a dome la the central lobby, where the sun-spot phenomena will be demonstrated. v Foucault's experiment demonstration demonstra-tion will be embodied In a 60-foot pendulum pen-dulum swinging in a wide arc. Th swinging pendulum will mark an Invariable In-variable direction In space, and as the earth revolves beneath It rotation will be plainly shown by the steady change In direction of the pendulum's swing over the divided arc. Here the pressure of light, earthquake action, magnetic storms, the gravitational pull of small masses, the growth of plants, living bacteria and other phenomena will be the subjects of other exhibits. In the seven exhibition rooms sur. rounding the central rotunda, the latest lat-est results of scientific and Industrial research will be demonstrated. One week there may be displayed the latest forms of radio telephony and the next perhaps a set of psychological psycho-logical tests or a new find of fossils or a series of synthetic compounds. The building, designed to cost $5,000,000, was the gift of the Carnegie Carne-gie corporation. The ground was bought with a fund of $200,000 collected col-lected by donations throughout the country, The building Vill be of marble In ?1h!8Ic sltnnllc'.ty. TJTAVB you ever seen the sun's spots T Have you ever seen demonstrated dem-onstrated Foucault's celebrated pendulum pen-dulum experiment to prove the rotation rota-tion of the earth? Have you ever watched the antics of minute lnfuso-rlans lnfuso-rlans swimming In water? With the completion of the new home of the Nntional Academy of Sciences Sci-ences at Washington, these things will be a regular part of the Interesting exhibits open to the public. It Is hoied to have the building completed by the fall of 1023. It will be located near the recently dedicated dedi-cated Lincoln memorial- and will he three stories high. The first floor will be given over to the public and museum mu-seum purposes, where many scientific facts will be demonstrated. The two upper floors will be devoted to ofllces. The nifin demonstration feature win |