8070 



210 



8080 



Vries, Jan de. On systen:s of conies 

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Eine RaumcurA^e n'*"" Ord- 



nung r"» Ranges und A;"''' Khisse schickt 

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8080 CONN EXES, COMPLEXES, 

 COXGRUEXCES ; HIGHER 



ELEMEXTS OF SPACE. 



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Conjugate rectilinear con- 



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gvuences 



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Congruences of curves. 



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Jessop, Charles Minshall. A corre- 

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A treatise on the line 



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Joly, Charles Jas])er. The quadratic 

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The geometry of a three- 

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Kantor, S. von. Die Typen der 

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Mttller, E[mil]. Ein Uebertragungs- 

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Covarianta of systems of 



linear differential equations and appli- 



