We present a simple and inexpensive experimental arrangement for hyperfine structure studies in atoms using commercially available laser diodes and hollow cathode lamps. The experiment is highly suitable for the undergraduate laboratory. This technique can be employed to investigate the hyperfine structure of rare earth and other elements such as Ta and Nb which have large nuclear magnetic and or quadrupole moments. In this paper, we report well-resolved hyperfine structure spectra recorded for holmium employing optogalvanic spectroscopy. We also report Doppler limited hyperfine structure measurements on the ground state of rubidium using injection current/ temperature tuning of the diode laser. This involves a simple experimental arrangement suitable for undergraduate laboratories. The hyperfine coupling constants for the level at 31 443.26 cm Ϫ1 in Ho I are reported for the first time. Details of the data analysis to obtain accurate hyperfine structure coupling constants from the observed spectra are presented. A number of commercially available diode lasers in the visible and the near infrared regions and simple in-house developed or commercially available low cost current and temperature controllers can be employed for the present studies. We employ simple cooling/heating or current modulation for tuning the output wavelength of the diode laser. The presently proposed experimental arrangement can be assembled easily and requires no machine/glass shop facilities.

WE have only the first number of this work before us. It contains two surprisingly short and easy pieces, intended, we presume, for the Church. It cannot be said that they are not melodious, but the melody is of a commonplace order, and characterless. We note that this number of the " Original Organ Music " is catalogued as Op. 3, Nos. I and 2 in the composer's works. We shall be curious to see the Concert pieces when they are ready. The Morszistg, Communion, 11d Eveni?sg Service. Set to music in the key of G major. By W. CIaxton, B.A. Mus. Bac., Oxon. [Novello, Ewer and Co.] THE style of this work shows a distinct leaning towards the modern school of service writing, in the way of obbligato, organ part, unison passages for the voices, frequent changes of signature, &c. It is not, however, an ambitious work, and it cannot be said to be strikingly original, but it is a useful and in many respects a commendable addition to this class of composition. Origzncz l OwXav Msic for Ch?>rch and Concert vse. By Edwin Allwright. [F. Pitman.]WE have only the first number of this work before us. It contains two surprisingly short and easy pieces, intended, we presume, for the Church. It cannot be said that they are not melodious, but the melody is of a commonplace order, and characterless. We note that this number of the " Original Organ Music " is catalogued as Op. 3, Nos. I and 2 in the composer's works. We shall be curious to see the Concert pieces when they are ready. The Morszistg, Communion, 11d Eveni?sg Service. Set to music in the key of G major. By W. CIaxton, B.A. Mus. Bac., Oxon. [Novello, Ewer and Co.] THE style of this work shows a distinct leaning towards the modern school of service writing, in the way of obbligato, organ part, unison passages for the voices, frequent changes of signature, &c. It is not, however, an ambitious work, and it cannot be said to be strikingly original, but it is a useful and in many respects a commendable addition to this class of composition. Origzncz l OwXav Msic for Ch?>rch and Concert vse. By Edwin Allwright. [F. Pitman.]WE have only the first number of this work before us. It contains two surprisingly short and easy pieces, intended, we presume, for the Church. It cannot be said that they are not melodious, but the melody is of a commonplace order, and characterless. We note that this number of the " Original Organ Music " is catalogued as Op. 3, Nos. I and 2 in the composer's works. We shall be curious to see the Concert pieces when they are ready. The Morszistg, Communion, 11d Eveni?sg Service. Set to music in the key of G major. By W. CIaxton, B.A. Mus. Bac., Oxon. [Novello, Ewer and Co.] THE style of this work shows a distinct leaning towards the modern school of service writing, in the way of obbligato, organ part, unison passages for the voices, frequent changes of signature, &c. It is not, however, an ambitious work, and it cannot be said to be strikingly original, but it is a useful and in many respects a commendable addition to this class of composition. Origzncz l OwXav...

High school students from the ghetto have special problems that often need more attention than mere talk. Many students lose all sense of personal motivation and worth, for example, due to overcrowded conditions or teacher conflicts in the school, or lack of money or parental guidance outside of school. To help students find concrete solutions to their problems, a new guidance program is suggested for the ghetto school, and the Center for Personal Advancement, now in effect at a Philadelphia high school, is offered as one example.

JSTOR is a not-for-profit service that helps scholars, researchers, and students discover, use, and build upon a wide range of content in a trusted digital archive. We use information technology and tools to increase productivity and facilitate new forms of scholarship. For more information about JSTOR, please contact support@jstor.org. This content downloaded from 128.235.251.160 on Mon, 30 Mar 2015 00:05:15 UTC All use subject to JSTOR Terms and Conditions I dz2 call upon the Lord. Anthem for foursoices. Composed by T. Mee Pattison.THIS is written with admirable purity. It is less remarkable for interest. There is little doubtthat a musician, who has so well mastered technicalities as the anthem evinces of its author, may soon gain fluency of thought if he persevere in the practice of writing * while the effect is so agreeable on an audience, and so saiutary on a choir, of grammatical correctness, that any deficiency of excitement in the character of this rnusic will be more than made up for by its unpretensive soundness. By all means go on Mr.Pattison, and fulfil our hope of still more attractive tLings from your hand. The piece is brief ill estent, contains a repeat of its first strain which little lengthens its efect, is easy of esecution, and is on all these counts, widely available.Ghant to U57 Lor2, we beseech Thee. Short full Anthem for four voices. Composed by J. iBarnby WE have not met with a more charming piece than the present, from the hand of its productinre author. The ten bar rhythm of its opening strain is rendered symmetrical by its repetition, and the unusuality of this stamps the piece with a distinctive ch&racter, which at once arrests and lastingly holds the attention. " Short " is one of its defining terms, and an obviously true one, for the entire length reaches but to three pages; and this shortness fits it for many places and occasions whence greater extent with equal merit might exclude it. Brevity is the soul of wit, and often also the body of es:pediency-the piece before us esemplifies the virtue of brevity both in its spiritual and corporeal conditions. Let no oue misprize this quality of conciseness. sc I have not time to write a short letter,a' says the always felicitous word-measurer, Charles Lamb, apologetically for inditing a long one. An exterlded composition in words or in notes, admits of dull passages as relief to more salient points * but a compact work requires that each word or every note be of indispensable interest in itself and necessity to the whole. The anthem is less chromatic than are some of Mr. Bareby's pieces, and it gains by the loss of sharps alld naturals, for its purpose of devotional expression and in e2zecutive facility. It is set to the Collect for the ninth Sunday after Trinity-it beautifully embodies the meek tenour of the test and it is available for large choirs or for small, and desirabie for any.PaqSadzse and the Pert. The words written and adapted from Moore's " Lalla Rookh," by X. W. Duleken, Ph.D., the music composed for solo voices, chorus, and...

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