Contents of Volume IV. 23 
PAGE 
282. On a particular case of Castillons Problem .... 435 
Quart. Math. Journ. t. in. (1860), pp. 157—164 
283. On a Theorem relating to Homograpliic Figures . . . 442 
Quart. Math. Journ. t. hi. (1860), pp. 177—180 
284. On a New Analytical Representation of Curves in Space . 446 
Quart. Math. Journ. t. hi. (1860), pp. 225—236 
285. On the System of Conics having double contact with each other 456 
Quart. Math. Journ. t. in. (1860), pp. 246—250 
286. Note on the value of certain Determinants the terms of which 
are the squared distances of Points in a Plane or in Space 460 
Quart. Math. Journ. t. in. (1860), pp. 275—277 
287. Note on the Equation for the squared differences of the Roots 
of a Cubic Equation ........ 463 
Quart. Math. Joui’n. t. hi. (1860), pp. 307—309 
288. Note on the Curvature of a plane Curve at a double point, 
and on the Curvature of Surfaces . . . . . 466 
Quart. Math. Journ. t. hi. (1860), pp. 322—326 
289. On some Numerical Expansions . . . . . . 470 
Quart. Math. Journ. t. m. (1860), pp. 366—369 
290. A Discussion of the Sturmian Constants for cubic and quartic 
Equations .......... 473 
Quart. Math. Journ. t. iv. (1861), pp. 7—12 
291. On the Demonstration of a Theorem relating to the Moments 
of Inertia of a Solid Body. . . . . . . 478 
Quart. Math. Journ. t. iv. (1861), pp. 25—27 
292. A Theorem in Conics . . . . . . . . 481 
Quart. Math. Journ. t. iv. (1861), pp. 131—133 
293. On a Certain System of Functional Symbols . . . . 484 
Quart. Math. Journ. t. iv. (1861), pp. 225—230 
294. On a Neiv Analytical Representation of Curves in Space . 490 
Quart. Math. Journ. t. v. (1862), pp. 81—86 
295. On the Construction of the ninth point of Intersection of the 
Cubics ivhicli pass through eight given points . . . 495 
Quart. Math. Journ. t. v. (1862), pp. 222—233 
296. On the Conics which pass through the four foci of a given 
Conic ........... 505 
Quart. Math. Journ. t. v. (1862), pp. 275—280