HYD] 



304 



[IGE 



Hyde, Edward Wyllys. 3. Solution of Mr 

 CHURCH'S problem : [given four points (no one 

 point lying within the triangle formed by the 

 other three) to construct geometrically the axis 

 and focus of the parabola passing through them], 

 Des Moines, Analyst, 2, 1875, pp. 76-77. 



4. Proof that no two different ellipses can 



be parallel. Des Moines, Analyst, 2, 1875, p. 

 144. 



5. Skew arches. Van Nostrand's Engin. 



Mag., 12, 1875, pp. 97-105, 193-201, 289- 

 296. 



6. The section of a circular torus by a 



plane passing through the centre and tangent at 

 opposite sides. Des Moines, Analyst, 3, 1876, 

 pp. 78-79. 



7. Problem : to fit together two or more 



quadrics so that their intersections shall be 

 plane. Des Moines, Analyst, 3, 1876, pp. 97- 

 99. 



8. Limits of the prismoidal formula, Des 

 Moines, Analyst, 3, 1876, pp. 113-116. 



Hyde, Edward Wyllys. 9. Computation of 

 earthwork. Van Nostrand's Engin. Mag., 15, 

 1876, pp. 225-228. 



1O. Stopping and starting railroad trains. 



Van Nostrand's Engin. Mag., 16, 1877, pp. 490 

 -496. 



11. Proposition in transversals. Des Moines, 



Analyst, 5, 1878, pp. 113-115. 



12. Centre of gravity of surface and solid 



of revolution. Amer. Jouru. Math., 3, 1880, pp. 

 329-331. 



13. Mechanics by quaternions. Des Moines, 



Analyst, 7, 1880, pp. 137-144, 177-184; 8, 1881, 



pp. 17-24, 49-55. 

 Hyernaux, Leon Joseph Ghilain. Accouchement 



premature artificiel. Recherches experimentales 



sur Faction ocytocique du chlorhydrate de pilo- 



carpine. Bruxelles, Acad. Med. Belg. Bull., 12, 



1878, pp. 701-725. 

 Hylten-Cavallus, G. E. Spridda vaxtgeogra- 



fiska bidrag till Varends flora. Botaniska Notiser, 



1880, pp. 191-193. 



I. 



I'Anson, J., & Pankhurst, E. A. On some arti- 

 ficial forms of Silica, illustrative of the structure 

 of agates, chalcedonies, &c. [1881.] Mineralog. 

 Mag., 5, 1884, pp. 34-40. 



Ibach, L. F. De quelques proprietes d'une fa- 

 mille de polygones que 1'on peut former avec un 

 polygone donne. Nouv. Ann. Math., 2, 1883, 

 pp. 226-233. 



Ibar Sierra, Enrique, & Rogers, /. T. Reise 

 im siidwestlichen Patagonien, 11. November bis 

 25. December 1877. Petermann, Mittheil., 26, 

 1880, pp. 48-58. 



Idanow, E. Sur 1'acide diethyl-methyl-acetique, 

 nouvelle variete isomerique de 1'acide oenanthy- 

 lique. [1876.] St. Petersb., Acad. Sci. Bull., 

 22, 1877, col. 170-173. 



Iddings, Joseph Paxton, & Hague, Arnold. 

 Notes on the volcanoes of northern California, 

 Oregon and Washington Territory. Amer. Journ. 

 Sci., 26, 1883, pp. 222-235. 



Igel, B. 4. Ueber die Darstellung der ternaren 

 quadratischen Formen durch Quadrate. [1874.] 

 Annali di Matemat, 6, 1875, pp. 141-143. 



5. Ueber einige elementare unendliche 



Reihen. [1876.] Wien, Akad. Sitzber., 74, 1877 

 (Abth. 2), pp. 189-204. 



6. Ueber die Discriminante der Jacobi- 



'schen Covariante dreier ternarer quadratischer 

 Formen, [nebst Nachtrag]. [1876.] Wien, Akad. 

 Sitzber., 74, 1877 (Abth. 2), pp. 355-370; 75, 

 1877 (Abth. 2), pp. 830-832. 



Igel, B. 7. Ueber die Singularitaten eines Kegel- 

 schnitt-Netzes und Gewebes. Wien, Akad. Sitz- 

 ber., 75, 1877 (Abth. 2), pp. 445-457. 



8. Einige Satze und Beweise zur Theorie 



der Resultante. [1877.] Wien, Akad. Sitzber., 

 76, 1878 (Abth. 2), pp. 145-168. 



9. Ueber die simultanen Invarianten, aus 



denen sich die Resultante dreier ternarer quadrat- 

 ischer Formen zusammensetzt. Wien, Akad. Sitz- 

 ber., 77, 1878 (Abth. 2), pp. 783-804. 



10. Ueber die orthogonalen und einige 



ihnen verwandte Substitutionen. [1877.] Wien, 

 Akad. Denkschr., 39, 1879 (Abth. 2), pp. 29-40. 

 11. Ueber die Frage, unter welch en Beding- 



ungen eine binare Form ra-ter Ordnung Theiler 

 einer binaren Foi'm w-ter Ordnung ist. [1880.] 

 Wien, Akad. Sitzber., 82, 1881 (Abth. 2), pp. 943 

 -955. 



12. Zur Theorie der Determinanten. [1880.] 



Wien, Akad. Sitzber., 82, 1881 (Abth. 2), pp. 1288 

 -1294. 



13. Ueber eine Classe von Abel'schen 

 Gleichungen. Wien, Akad. Denkschr., 45, 1882 

 (Abth. 2), pp. 373-385. 



14. Ueber em Princip zur Erzeugung von 



Covarianten. [1882.] Wien, Akad. Denkschr., 

 46, 1883 (Abth. 2), pp. 350-368. 

 Igelstrom, L. J. 34. Plumboferrit, ett nytt 

 mineral fran Jakobsbergs manganmalmsgrufya 

 vid Nordmarken i Vermland. Stockholm, Of- 

 versigt, 38, 1882, No. 8, pp. 27-31. 



