``Das letzte Ziel ist immer die Darstellung einer Funktion'': 

      Grundlagen der Analysis bei Weierstra\ss \ 1886, historische 

      Wurzeln und Parallelen 

      Detlef Laugwitz ...................................................... 341



Nicholas Saunderson: The Blind Lucasian Professor 

      J. J. Tattersall ..................................................... 356



Mathematical Foundations of a Cultural Project or Ramchandra's 

      Treatise ``Through the Unsentimentalised Light of Mathematics'' 

      Dhruv Raina .......................................................... 371



Eighty Years of Sommerfeld's Radiation Condition 

      Steven H. Schot ...................................................... 385



Newton's Solution to the Equiangular Spiral Problem and a 

      New Solution Using Only the Equiangular Property 

      Herman Erlichson ..................................................... 402



NOTES      



On the Authorship of ``A Calculation of the Credibility of Human 

      Testimony'' 

      A. I. Dale ........................................................... 414



Dynamis, mithartum, and square

      David H. Fowler ...................................................... 418



REVIEWS      



The Taming of Chance, by Ian Hacking 

      (Gerardo G. Tango) ................................................... 431



Mathematische Schriften, by G. W. Leibniz 

      (Geneviève Boulet) ................................................... 435



IN MEMORIAM      



Ahmad Salim Saidan (1914--1991) 

      Boris A. Rosenfeld ................................................... 438



Bibliography of Publications of Ahmad Salim Saidan (1914--1991) 

      on the History of Mathematics and Astronomy in Islamic 

      Civilization, and List of Medieval Arabic Texts Published 

      by Him 

      Jan P. Hogendijk ..................................................... 439



      ABSTRACTS............................................................. 444



INDEX OF AUTHORS OF ARTICLES AND REVIEWS 

      IN VOLUME 19.......................................................... 460



INDEX OF AUTHORS OF PUBLICATIONS REVIEWED 

      AND ABSTRACTED IN VOLUME 19........................................... 461                              

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