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Drecker. 'riefenscliarfe. Phot, lldsch., 

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37 IL' 



Droz-Famy, A. Nota di geometria 

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3713 



Ducci, E. Carattere di divisibilita 

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3714 



Duliring, E[ugen] und DiUirmg, Ul- 

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3715 



Dunkel, Otto. Regular singular points 

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Some applications of 



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Duporcq, lamest. Sur les transfor- 

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Dziobek, O[tto]. Mathematisches und 



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Easton, Burton Scott. The Galois 

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The constructive develop- 

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Ebner. Zur Theorie der konjugierten 

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3722 

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Eckliardt, IIliu^i]. Ableitung [der 

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Eggert, Otto. ['eber die gunstigsten 

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Hilfstafel zur Berechnung 



der Richtungskoeffizienten fiir Koor- 

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3725 

 Eisenhart, L[uther] P[fahler]. Infini- 

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Isothermal - conjugate 



systems of lines on surfaces. Amer. J. 

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Surfaces whose lines of 



curvature in one system are represented 

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Surfaces of constant mean 



curvature. Amer. J. ]\lath., Baltimore, 

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3729 



Surfaces whose first and 



second fundamental forms are the 

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Xote on isotropic con- 

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Infinitesimal deformation 



of the skew helicoid. New York, N.Y., 

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Conjugate rectilinear con- 

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Congruences of curves. 



New York, N.Y., Trans. Amer. Math. 

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