ROB] 



227 



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Roberts, Michael. 9. Memoire sur la geometrie 

 de courbes tracees sur la surface d'un ellipso'ide. 

 Liouville, Journ. Math. XV., 1850, pp. 275- 

 295. 



10. Discussion analytique de deux surfaces 



particulieres qui jouissent de la propriete d'avoir 

 pour chacun de leurs points les deux rayons de 

 courbure egaux et de signes contraires. Liou- 

 ville, Journ. Math. XV., 1850, pp. 323-331. 



11. Note sur quelques applications de la 



theorie des surfaces. Nouv. Ann. Math. XIV., 

 1855, pp. 268-271. 



12. Sur une question d'algebre relative a 



deux equations cubiques. Nouv. Ann. Math. 

 XV., 1856, pp. 76-80 ; XVI., 1857, pp. 366- 

 369. 



13. Note sur l'equation aux carres des 



differences des racines d'une equation du qua- 

 trieme degre. Nouv. Ann. Math. XVII., 1858, 

 pp. 268-269. 



14. Note sur l'equation au carre des diffe- 

 rences des racines d'une equation du degre n. 

 Nouv. Ann. Math. XVII., 1858, pp. 440-441. 



15. Note sur les equations du quatrieme 



degre. Nouv. Ann. Math. XVIII., 1859, pp. 

 87-89. 



16. Extrait d'une lettre sur la theorie des 



equations algebriques. Tortolini, Annali, II., 

 1859, pp. 330-332. 



17. Sur quelques questions d'algebre. 



Nouv. Ann. Math. XIX., 1860, pp. 23-26. 



— 18. Sur quelques fonctions symetriques 

 des racines des equations algebriques. Torto- 

 lini, Annali, III., 1860, pp. 172-178. 



— 19. Sur les covariants des formes binaires 

 du cinquieme degre. Tortolini, Annali, III., 



1860, pp. 340-344. 



— 20. On some symmetric functions of the 

 roots of algebraic equations. Quart. Journ. 

 Math. IV., 1861, pp. 57-65. 



— 21. On the covariants of a binary quantic 

 of the n th degree. Quart. Journ. Math. IV., 



1861, pp. 168-178, 324-327; V., 1862, pp. 144- 

 151. 



22. Note on the equation of the squares 



of the differences of the roots of a quintic. 

 Quart. Journ. Math. IV., 1861, pp. 234-235. 



23. On some applications of algebra to 



the theory of covariants. • [1861.] Quart. 

 Journ. Math. V., 1862, pp. 18-20. 



24. Note on certain curves of the third 



degree. Quart. Journ. Math. V., 1862, pp. 

 365-366. 



Roberts, 0. Owen. An essay on Gorse. Agric. 



Soc. Journ. VI., 1845, pp. 379-397. 

 Roberts, Richard. A new electro-magnet. 



Sturgeon, Ann. Electr. VI., 1841, pp. 166- 



168. 



Roberts, Richard. 2. On the expansion of 

 solids by heat. Brit. Assoc. Rep. 1850 (pt. 2), 

 pp. 16-18. 



3. Proposed improvements in pharology. 



[1859.] Manchester, Phil. Soc. Mem. XV., 

 1860, pp. 166-171. 



Roberts, Samuel. The action of isinglass in 

 clearing malt liquor explained. Thomson, Re- 

 cords, III., 1836, pp. 105-110; Erdm. Journ. 

 Prak. Chem. VII., 1836, pp. 332-338 ; Dingier, 

 Polytechn. Journ. LXL, 1836, pp. 57-62. 



Roberts, Samuel. On the developement of func- 

 tions of the form F(z+x). Phil. Mag. XXXII. , 

 1848, pp. 284-287. 



2. Note on the symmetrical expression of 



the constants in the equations of algebraical 

 curves. Quart. Journ. Math. II., 1858, pp. 

 39-44. 



3. On the transformation of coordinates. 



Quart. Journ. Math. II., 1858, pp. 172-192. 



4. A word on foci. Quart. Journ. Math. 



H., 1858, pp. 195-198. 



5. Notes on the circular points at infinity. 



Quart. Journ. Math. III., 1860, pp. 90-94. 



6. On the intersections of tangents drawn 



through two points on a curve of the third 

 degree. Quart. Journ. Math. DU., 1860, pp. 

 118-127. 



— — 7. On the solution of differential equations. 

 Quart. Journ. Math. III., 1860, pp. 218-225. 



8. Note on a theorem in the calculus of 



operations. Quart. Journ. Math. DIL, 1860, 

 pp. 310-311. 



9. On a developement in the calculus of 



operations. Quart. Journ. Math. IV., 1861, pp. 

 44-48. 



10. A proof of Prof. Sylvester's theorem 



of partitions. Quart. Journ. Math. IV., 1861, 

 pp. 155-158. 



11. On Abbogast's calculus of derivations. 



Quart. Journ. Math. IV., 1861, pp. 193-204. 



12. Geometrical notes. Quart. Journ. 



Math. IV., 1861, pp. 361-364. 



13. On certain systems of curves of the 



third degree passing through the vertices and 

 the intersections of opposite sides and diagonals 

 of a given quadrilateral. [1 861.] Quart. Journ. 

 Math. V., 1862, pp. 54-58. 



Roberts, William. Sur une representation geo- 

 metrique des fonctions elliptiques de premiere 

 espece. Liouville, Journ. Math. VIII., 1843, 

 pp. 263-264. 



2. On the rectification of lemniscates and 



other curves. Irish Acad. Proc. H., 1844, pp. 

 180-183. 



3. On a class of spherical curves. Irish 



Acad. Proc. DT., 1844, pp. 194-195. 



F F 2 



