CONTENTS. 
viii 
393. On the Conics which touch three given Lines and pass through 
a given Point ......... 
Quart. Math. Jour. t. viii. (1867), pp. 220—222 
394. On a Locus in relation to the Triangle . . 
Quart. Math. Jour. t. viii. (1867), pp. 264—277 
395. Investigations in connexion with Casey s Equation 
Quart. Math. Jour. t. viii. (1867), pp. 334—341 
396. On a certain Envelope depending on a Triangle inscribed in 
a Circle .......... 
Quart. Math. Jour. t. ix. (1868), pp. 31—41 and 175—176 
397. Specimen Table M = a a l/ (Mod. N) for any prime or composite 
Modulus .......... 
Quart. Math. Jour. t. ix. (1868), pp. 95—96 and plate 
398. On a certain Sextic Developable and Sextic Surface connected 
therewith .......... 
Quart. Math. Jour. t. ix. (1868), pp. 129—142 and 373—376 
399. On the Cubical Divergent Parabolas ...... 
Quart. Math. Jour. t. ix. (1868), pp. 185—189 
400. On the Cubic Curves inscribed in a given Pencil of Six Lines 
Quart. Math. Jour. t. ix. (1868), pp. 210—221 
401. A Notation of the Points and Lines in Pascal’s Theorem 
Quart. Math. Jour. t. ix. (1868), pp. 268—274 
402. On a Singularity of Surfaces ....... 
Quart. Math. Jour. t. ix. (1868), pp. 332—338 
403. On Pascal’s Theorem ......... 
Quart. Math. Jour. t. ix. (1868), pp. 348—353 
404. Reproduction of Euler’s Memoir of 1758 on the Rotation of a 
Solid Body. ......... 
Quart. Math. Joiir. t. ix. (1868), pp. 361—373 
An Eighth Memoir on Quantics ...... 
Phil. Trans, t. clvii. (for 1867), pp. 513—554 
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