8450 



Surfaces. Lines of Curvature 



8450 



and principal radii of curvature of quadric, de- 

 termination. Mannheim, A. Liouv. J. Mth. 

 8 (1882 167-. 



of quadric. Humbert, G. Par. S. Mth. Bll. 

 13 (1885) 142-. 



Indicatrix-surface. Salvert, (le vicomte) de. 



Brux. S. Sc. A. 8 (1884) (Ft. 2) 67-. 

 Intersection of 2 surfaces, curvature. Enneper, 



A. Gott. Nr. (1868) 181-. 

 Isogonal transformations, curvature in. 



Laisant, C. A. Par. S. Mth. Bll. 15 (1887) 



39-. 

 Law. Dienger, J. Grunert Arch. 11 (1848) 



328-. 

 Linear doubly harmonic elements (Liouville's 



form). Raffy, L. C. E. 109 (1889) 609-, 



661-. 



Lines of curvature. 



Joachimsthal, F. Crelle J. 30 (1846) 347-; 



N. A. Mth. 9 (1850) 64-. 

 Brioschi, F. Tortolini A. 4 (1853) 129-. 

 Casey, J. [1865] Mess. Mth. 3 (1866) 236-. 

 Taylor, H. M. Mess. Mth. 5 (1876) 186-. 

 D'Estocquois, T. Dijon Ac. Sc. Mm. 4 (1877) 



Bissing, G. J. H. Un. Cir. [3] (1884) 124. 

 Catalan, E. C. Liege S. Sc. Mm. 13 (1886) 



103-, 108-, 143-. 



Pirondini, G. A. Mt. 16 (1888-89) 61-. 

 Catalan, E. Brux. Ac. Bll. 27 (1894) 240-. 

 Craig, T. C. E. 120 (1895) 672-. 

 Taliaferro, T. H. Am. J. Mth. 17 (1895) 



273-. 

 Burali-Forti, C. Palermo Cir. Mt. Ed. 12 



(1898) 111-. 

 of algebraic surface. Enneper, A. Z. Mth. 



Ps. 24 (1879) 180-. 



all surfaces of 4th class, correlatives of 

 cyclides. Darboux, G. C. E. 92 (1881) 

 29-. 



annular surfaces with two spherical direc- 

 trices. Snyder, V. Am. J. Mth. 22 (1900) 

 96-. 



and asymptotic lines. Le Pont, H. G. Teix. 



J. Sc. 8 (1887) 43-. 



. Lelieuvre, . C. E. 106 (1888) 183-. 



cases. Enneper, A. Gott. Nr. (1870) 267-. 

 . Blutel, E. C. E. 128 (1899) 289-, 721-. 

 of central surfaces of 2nd degree. Durrande, H. 



N. A. Mth. 2 (1863) 362-. 



class of surfaces of 4th degree. Moutard, T. 

 C. E. 59 (1864) 243-. 



, especially of Lame's tetrahedral 



surfaces. Darboux, G. C. E. 84 (1877) 



382-. 

 and confocal surfaces and sphero-conics. 



Casey, J. [1865] Mess. Mth. 3 (1866) 236-. 

 of conic, generators of which are parallel to 



tangents to given curve. Molins, H. Toul. 



Mm. Ac. 4 (1860) 49-. 

 and conies, analogy. Laving, J. G. Mess. 



Mth. 1 (1862) 247-. 



curvature of surfaces. David, C. A. [1861] 

 (xn) Lille S. Mm. 8 (1862) 383-. 



curvilinear coordinates of, expression of (x, y, z). 



Enneper, A. Gott. Nr. (1874) 474-. 

 of cyclides. Humbert, G. C. E. 106 (1888) 



257-. 



cylinders, character. Ahrendt, A. Arch. 

 Mth. Ps. 9 (1890) 31-. 



developable surface with given edge of 

 regression. Molins, H. Toul. Mm. Ac. 4 

 (1860) 493-. 



surfaces. Falk, M. Ts. Mt. Fys. 3 



(1870) 123-. 

 differential equations. Brasseur, J. B. Liege 



Mm. S. Sc. 1 (1843) 263-. 

 of doubly ruled surfaces. Picart, A. Par. EC. 



Norm. A. 1 (1864) 289-. 



ellipsoid. Monge, G. Par. EC. Pol. J. 

 2 cah. (1795-96) 145-. 



. Ellis, E. L. Camb. Mth. J. 2 (1841) 



133-. 

 . Cayley, A. Camb. Mth. J. 3 (1843) 



264-. 

 . Roberts, M. Ir. Ac. P. 3 (1847) 383-; 



Camb. and Dubl. Mth. J. 3 (1848) 159-. 



. Aoust, L. C. E. 48 (1859) 886-. 



. Dewulf, . N. A. Mth. 20 (1861) 424-. 



. Bbklen, O. Grunert Arch. 38 (1862) 



158-. 



. Roberts, M. A. Mt. 3 (1869-70) 

 294-. 



. Catalan, E. C. Liege S. Sc. Mm. 12 



(1885) No. 2, 226-; 13 (1886) 20-, 215-. 



. Salvert, (le vicomte) de. N. A. 

 Mth. 8 (1889) 214-. 



. Neuberg, J. Mathesis 13 (1893) 

 244-. 



, application of Abel's theorem to com- 

 parison of arcs. Roberts, M. A. Mt. 2 

 (1868-69) 13-. 



, conformal representation by elliptic 

 functions. Neovius, E. R. Helsingf. Acta 

 15 (1888) 363-. 



, foci. Boklen, O. Z. Mth. Ps. 26 (1881) 



383-. 

 , projection. Kupper, C. Schlomilch Z. 



2 (1857) 223-. 

 , quadrilateral formed by. Plagemann, W. 



Grunert Arch. 33 (1859) 390-. 

 , and their relation to confocal spherical 



ellipses. Verdam, G. J. [1864] Amst. Vs. 



Ak. 1 (1866) (Nth.) 64-. 

 of wave surface. Catalan, E. C. As. 



Fr. C. E. 7 (1878) 56-. 



equilateral paraboloid. Barbarin, P. N. A. 

 Mth. 3 (1884) 97-, 160-. 



especially shortest distance between two 

 adjacent normals, one passing through an 

 umbilic. Vieille, J. Liouv. J. Mth. 20 

 (1855) 121-. 



generation of surfaces by. Amigues, E. N. A. 

 Mth. 16 (1877) 337-. 



. Hazzidakis, J. N. Crelle J. 



Mth. 98 (1885) 49-. 



and geodesies on confocals. Oiasles, M. Liouv. 

 J. Mth. 11 (1846) 105-. 



of developable surfaces, generators of 

 which are parallel to those of any ruled 

 surface. Molins, H. Liouv. J. Mth. 4 

 (1859) 347-. 



612 



