4 INDEX II. 
of insanity, disease, want and crime, 
164 ‘ 
Diatomacee found in chalk, on the forms 
of, 97 ; on the siliceous cells formed in 
the frustules of, 101, 
Dingle district, on the fossils of the, 89. 
Dingle promontory, on the geological 
structure of the, 70. 
Diseases, on the mortality from certain, 
110. 
Dodds (J. W.) on improvements in iron 
and steel, and their application to rail- 
way and other purposes, 180. 
Donovan (M.) on a singular acoustic 
phenomenon, 22; on a moveable hori- 
zontal] sun-dial, which shows correct 
solar time within a fraction of a mi- 
nute, 24; on hygrometers and hygro- 
metry, with a description of a new 
modification of the condenser hygro- 
meter and hygroscope, 45, 
Dowden (R,) on a more complete com- 
pilation of the facts illustrating the 
physiglogy of yegetable and animal 
secretions, 110; on a cash land-trade 
for Ireland, retail and wholesale, 160. 
. Dredging in Weymouth Bay, on, 108. 
Drift, on the, of West Galway, and the 
: Eastern parts of Mayo, 64; on a fossil 
of the Severn, 93. 
Drummond (J.), outline of a theory of 
the structure and magnetic phenomena 
of the globe, 22. 
Drunkenness, on the necessity of prompt 
measures for the suppression of, 161. 
Dublin (Archbishop of), introductory 
address to the Statistical Section, 154. 
Du Noyer (M.) on the geology of Lam- 
bay Island, 75 ; on the junction of the 
mica slates and granite, Killiney Hill, 
_ Dublin, 84. 
Dupré (Dr. A.) on the presence of copper 
__ in the tissues of plants and animals, 55. 
Dur of Ptolemy, identification of the 
river, with the Kenmare river, 132. 
- Durness, on the fossils from, 83. 
Ear, on the functions of the human, 116. 
Earth’s surface, on the direction of gra- 
_ yity at the, 24; on electric currents in 
_ the, 48, 
Education in Ireland, on the rise, pro- 
gress and present prospects of popular, 
163. ‘ 
Electrical phenomena, on certain, in the 
_ United States, 32. 
Electric current, on the variations of in- 
_ tensity undergone by the, when it pro- 
duces mechanical work, 16; in the 
 earth’s surface, 48. 
207 
Electric fishes, 115; on the employ- 
ment of the, asmedical shock machines, 
115. 
Electricity, 11; on the correlation of 
dynamic, and the other physical forees, 
16, 
Electro-dynamic induction machine, on 
the, 11. 
Electro-magnetic engines, 178, 
Electrotype processes, on three new, 
54 
Ellipsoid, on the surface of centres of 
an, 4. 
Engines, electro-magnetic, 178 ; on coal- 
burning, id, ; on the importance of re- 
gulating the speed of marine, 198. 
England and India, on the routes of com-— 
munication between, 123. 
Epidemic diseases, on the connexion be- 
tween atmospheric vicissitudes and, 
115. 
Equatoreal instruments, on improvements 
in the optical details of, 8, 
‘Erebus’ and ‘ Terror,’ report of a, search- 
ing party down the Great Fish River 
in quest of the crews of the, in 1855, 
148, 
Ethnology, 117, 
Euclid’s ‘‘ Reductio ad absurdum,’’ on the 
origin and elimination of, 3, 
Eurypterus, new species of, from the old 
red sandstone of Herefordshire, 93, 
Fayé (Dr. M.) on the action of some 
animal poisons, 110, 
Fern, on a new fossil, from the coal- 
measures near Glin, 63. 
Fertilizers, on the choice of perennial 
rather than annual, 54, 
Finland, on the character, extent, and 
ethnological value of the Indo-Euro- 
pean element in the language of, 
127, 
Fishes, on the cranium of osseous, 104; 
electric, 115; employment of electric, 
as medical shock machines, ib, 
FitzRoy (Rear-Admiral) on meteorolo- 
gical observations made at sea, 28; 
on the probable migrations and yaria- 
tions of the earlier families of the 
human race, 130, 
Fluids, on the solidification of, by pres- 
sure, 25. 
Fluorine, on the processes for the detec- 
tion of, 61. 
Flustrella hispida, on, 106. 
Foot (F. J.) on the geology of the neigh- 
bourhood of Tralee, 65, 
Formulz, on the interpretation of certain 
symbolic, 3. 
