Contents of Volume VIII. 
41 
514. 
On the 'problem of the in-and-circumscribed triangle 
Phil. Trans, t. clxi. (for 1871), pp. 369—412 
PAGE 
212 
515. 
Sur les courbes aplaties ........ 
Comptes Rendus, t. lxxiv. (1872), pp. 708—712 
258 
516. 
Sur une suif ace quartique aplatie ...... 
Comptes Rendus, t. lxxiv. (1872), pp. 1393—1395 
262 
517. 
Sur les surfaces divisibles en carrés par leurs courbes de 
courbure et sur la théorie de Dupin ..... 
Comptes Rendus, t. lxxiv. (1872), pp. 1445—1449 
264 
518. 
Sur la condition pour qui une famille de surfaces données 
puisse faire partie d'un système orthogonal .... 
Comptes Rendus, t. lxxv. (1872), pp. 177—185, 246—250, 324—330, 
381—385, 1800—1803 
269 
519. 
On curvature and orthogonal surfaces ..... 
Phil. Trans, t. clxiii. (for 1873), pp. 229—251 
292 
520. 
On the centro-surface of an ellipsoid ..... 
Camb. Phil. Trans, t. xii. Part I. (1873), pp. 319—365 
316 
521. 
On Dr Wiener's model of a cubic surface with 27 real lines ; 
and on the construction of a double-sixer .... 
Camb. Phil. Trans, t. xii. Part I. (1873), pp. 366—383 
366 
522. 
Note on the theory of invariants ...... 
Math. Ann. t. hi. (1871), pp. 268—271 
385 
523. 
On the transformation of unicursal surfaces .... 
Math. Ann. t. hi. (1871), pp. 469—474 
388 
524. 
On the deficiency of certain surfaces ..... 
Math. Ann. t. in. (1871), pp. 526—529 
394 
525. 
An example of the higher transformation of a binary form . 
Math. Ann. t. iv. (1871), pp. 359—361 
398 
526. 
On a surface of the eighth order ...... 
Math. Ann. t. iv. (1871), pp. 558—560 
401 
527. 
On a theorem in covariants ....... 
Math. Ann. t. v. (1872), pp. 625—629 
404 
528. 
On the non-Euclidian geometry ...... 
Math. Ann. t. v. (1872), pp. 630—634 
409 
529. 
A “ Smith's Prize" paper [1868]; solutions by Prof Cayley . 
Oxford, Camb. and Dubl. Messenger of Mathematics, t. iv. (1868), 
pp. 201—226 
414 
c. 
XIV. 
6