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Occurrence of germanium in smithsonite and in mine waters
432
CURRENT TOPICS.
[J. F. I.
The vowel of " R e x " has a component of the requisite frequency, so that the call of the word is followed with surprising promptness by the appearance of the dog, while the utterance of other names produces no effect, unless they, too, have a component of the right pitch. At the close Sir Richard placed in his mouth a rubber tube and, blowing through it, set in vibration a membrane that emitted a squeaky noise into a space enclosed by his hands. He then by the use of his fingers divided this into two cavities for the enunciation of vowels, and opened and closed the space in such a way that consonants were prodaaced. Thus manipulating the " cheirophone " he made it say, " I hope you have all enjoyed this paper." G.F.S. MR. P. D. FOOTE of the Bureau of Standards suggests arsenic vapor traversed by an electric current as a source of ultra-violet light. No visible radiation is thus produced. G.F.S. PROF. H. N. RUSSELL, of Princeton, in a paper on the " Spectrum of Titanium " at the British Association, stated that from a study of the stars it can be inferred that helium has a high and titanium a low ionizing potential. In connection with the difficulty he experienced in disentangling the complex relations of the spectral lines of this element, he recommended in similar cases that the investigator drop • his problem for a week and then return to it afresh. In the course of his remarks he made reference to work of investigation done by some one in Spain. It would therefore appear that this country is advancing in science, for in recent years scarcely any physical papers have originated there with the exception of those emanating from the pupils of Pierre Weiss, the originator of the magneton theory of magnetism. G.F.S. AT THE British Association Sir Napier Shaw presented a paper, " If the Earth Went Dry." He manifestly found pleasure in the double meaning that might be attached to this title. One of the effects would be the nearer approach to the earth of the surface separating the lower region where convective air currents hold sway from that above it where the temperature does not vary with height. H e appeared to feel that as a rule people are not sufficiently impressed by the magnitude of the radiation received by the sun, which he stated to be equal to 50o0 kilowatts per acre. Professor Eve, of McGill University, was presiding at this session, and at the close of the paper expressed; his personal indebtedness to the distinguished author for having sent him, a man brought up on books, two original papers in Cambridge University. G.F.S. P. E. SABINE,of the V~rallace Clement Sabine Laboratory, Riverbank, Geneva, Illinois, read a paper before the British Association on " Research in Architectural Acoustics." It was very appropriate that a paper on this subject should emanate from a member of the Sabine clan. In the sound chamber of his laboratory the measure-
CURRENT TOPICS.
[J. F. I.
The vowel of " R e x " has a component of the requisite frequency, so that the call of the word is followed with surprising promptness by the appearance of the dog, while the utterance of other names produces no effect, unless they, too, have a component of the right pitch. At the close Sir Richard placed in his mouth a rubber tube and, blowing through it, set in vibration a membrane that emitted a squeaky noise into a space enclosed by his hands. He then by the use of his fingers divided this into two cavities for the enunciation of vowels, and opened and closed the space in such a way that consonants were prodaaced. Thus manipulating the " cheirophone " he made it say, " I hope you have all enjoyed this paper." G.F.S. MR. P. D. FOOTE of the Bureau of Standards suggests arsenic vapor traversed by an electric current as a source of ultra-violet light. No visible radiation is thus produced. G.F.S. PROF. H. N. RUSSELL, of Princeton, in a paper on the " Spectrum of Titanium " at the British Association, stated that from a study of the stars it can be inferred that helium has a high and titanium a low ionizing potential. In connection with the difficulty he experienced in disentangling the complex relations of the spectral lines of this element, he recommended in similar cases that the investigator drop • his problem for a week and then return to it afresh. In the course of his remarks he made reference to work of investigation done by some one in Spain. It would therefore appear that this country is advancing in science, for in recent years scarcely any physical papers have originated there with the exception of those emanating from the pupils of Pierre Weiss, the originator of the magneton theory of magnetism. G.F.S. AT THE British Association Sir Napier Shaw presented a paper, " If the Earth Went Dry." He manifestly found pleasure in the double meaning that might be attached to this title. One of the effects would be the nearer approach to the earth of the surface separating the lower region where convective air currents hold sway from that above it where the temperature does not vary with height. H e appeared to feel that as a rule people are not sufficiently impressed by the magnitude of the radiation received by the sun, which he stated to be equal to 50o0 kilowatts per acre. Professor Eve, of McGill University, was presiding at this session, and at the close of the paper expressed; his personal indebtedness to the distinguished author for having sent him, a man brought up on books, two original papers in Cambridge University. G.F.S. P. E. SABINE,of the V~rallace Clement Sabine Laboratory, Riverbank, Geneva, Illinois, read a paper before the British Association on " Research in Architectural Acoustics." It was very appropriate that a paper on this subject should emanate from a member of the Sabine clan. In the sound chamber of his laboratory the measure-