722 



KEPORT — 1878. 



mon measure of value in direct taxa- 

 tion, 220. 

 Hicks (Dr. H.) on some new areas of pre- 

 Cambrian rocks in North Wales, 536. 

 Hicks (W. M.) on the mation of two 



cylinders in a fluid, 475. 

 *Hinton (B. H.) on space numbers : an 



extension of arithmetic, 486. 

 Hirst (Dr. T. A.) on Halphen's new form 

 of Chasles's theorem on systems of 

 conies satisfying four conditions, 

 464. 

 Holland (Rev. F. W.), a journey on foot 



through Arabia Petrasa, 622. 

 *Holopm, the genus, Sir Wyville Thom- 

 son on, 571. 

 *Holothuria, a case of commensalism in 



the, Dr. A. F. Anderson on, 559. 

 Howell (H. H.) on the circulation of 



underground waters, 382. 

 Howorth (H. H.) on the mammoth in 

 Siberia, 571 ; *on the spread of the 

 Sclavs, 590. 

 Hubbard (Rt. Hon. J. G.) on a common 

 measure of value in direct taxation, 

 220. 

 Huggins (Dr.) on the oscillation-fre- 

 quencies of solar rays, 37. 

 Hughes (Prof. T. McK.) on the erratic 

 blocks of England, Wales, and Ireland, 

 185; on the exploration of the Settle 

 Caves (Victoria Cave), 377. 

 Hull (Prof. E.) on underground tempera- 

 ture, 178; on the circulation of under- 

 ground waters, 382; *sketch of the 

 geology of the environs of Dublin, 

 527 ; on the microscopic appearances 

 of Hullite, a hitherto undescribed 

 mineral, 542 ; on the progress of the 

 Geological Survey of Ireland, 543. 

 Hullite, a hitherto undescribed mineral, 

 E. T. Hardman on : with notes on the 

 microscopic appearances, by Prof. E. 

 Hull, 542. 

 Hunt (T. S.) *on the origin of crystalline 

 rocks, 536 ; on the geological rela- 

 tions of the atmosphere, 544. 

 Hutchinson (T. J.) on some tribes of 



tropical aborigines, 589. 

 Huxley (Prof.) on the occupation of a 

 table at the zoological station at 

 Naples, 149 ; Address by, to the De- 

 partment of Anthropology, 573. 

 Hydrated iron ores, the influence that 

 microscopic vegetable organisms have 

 had on the production of, A. Gages on, 

 545. 

 Hydrogeological survey of England, J. 

 Lucas on the, 692. 



Importance of raising Ireland to the 

 level of England and Scotland in the 

 matter of industrial schools and com- 



pulsory education, Dr. W. N. Hancock 

 on the, 674. 

 India, observations in, report on arrange- 

 ments for the taking of, 103. 



, the new geological map of, V. Ball 



on, 532. 

 *Indigo, Baeyer's synthesis of, a short 

 account of, by Prof. J. E. Reynolds, 

 517. 



Ingram (Prof. J. K.), Address by, to the 

 Section of Economic Science and Sta- 

 tistics, 641. 



Insane, the education and training of 

 the, Dr. J. Lalor on, 667. 



Inscribed bone implements, J. P. Harri- 

 son on, 591. 



Insect-fertilised flowers, the association 

 of an inconspicuous corolla with pro- 

 terogynous dichogamy in, A. S. Wilson 

 on, 564. 



Instruments for measuring the speed of 

 ships, report on, 219. . 



Interior of the earth, the limits of hypo- 

 theses regarding the physical proper- 

 ties of the matter of the, Prof. H. 

 Hennessy on, 485. 



Intrinsic muscles of the mammalian foot, 

 Dr. D. J. Cunningham on the, 599. 



Ireland, the Geological Survey of, Prof. 

 E. Hull on the progress of, 543. 



, the glaciation of, and the tradition 



of Lough Lurgan, W. M. Williams on 

 the, 528. 



, the influence of " strike " on the 



physical features of, E. T. Hardman 

 on, 541. 



, the rainfall of, G. J. Symons on, 



692. 



Irish fossils, some new species of, W. H. 

 Baily on, 535. 



land question, impediments to the 



prompt carrying out of the principles 

 conceded by Parliament on the, Dr. 

 W. N. Hancock on, 664. 



Irlande, les races anciennes de 1', par H. 

 Martin, 585. 



Isochronic pendulum, D. Lane on an, 

 455. 



Isoetes echinospora, exhibition of speci- 

 mens of, by Prof. A. Dickson, 570. 



*Jacob (A. E.), exhibition of a wryneck 

 obtained in Ireland, 572. 



Janssen (Dr. J.) sur une nouvelle methode 

 de photographie solaire et les decou- 

 vertes qu'elle donne touchant la verit- 

 able nature de la photosphere, 443; sur 

 la constitution des spectres photogra- 

 phiques quand Taction lumineuse est 

 extremement courte, 445 ; sur l'eclipse 

 totale et la couronne, 445. 



Jeffery (H. M.) on the spherical class- 

 cubic with three single foci, 490 ; on a 



