152 
Heart, on the motions and sounds of 
the, 155. 
Hodgkin, (Dr.) on the composition 
of secretions, and on the organs 
producing them, 139. 
Hodgkinson (E.) on the strength and 
other properties of cast iron ob- 
tained by hot and cold blast, 337. 
Humboldt’s observations on the mag- 
netic intensity of the earth, 5, 7. 
Ichthyology of Dukhun, 251. 
Tron, cast, on the composition of, 117. 
, obtained by hot and cold 
blast, on the strength and other 
properties of, 337, 377. 
{rrigation of Dukhun, 272. 
Isomorphism, 164; Isodimorphous 
groups, table of, 169; remarks on, 
170. 
Johnston (Prof.) on dimorphous bo- 
dies, 163; isodimorphous groups, 
168; monomorphous groups, 175; 
of analogous chemical groups,which 
taken singly are monomorphous, 
but which as groups are dimorphous, 
185; of bodies assuming two or 
more series of unlike physical pro- 
perties, but of which the crystalline 
form belonging to each series has 
not yet been determined, 187; of 
crystallized bodies not known to as- 
sume more than one form, which 
yet exhibit unlike physical proper- 
ties in different portions of their 
mass, 192; of epigene and pseudo- 
morphous crystals, 194; of trimor- 
phous bodies, 197; relation of di- 
morphism and molecular arrange- 
ment in general, to temperature, 
electricity, and mechanical pressure, 
199; eause of dimorphism, 203 ; 
extent of dimorphism, 206; rela- 
tion of the crystalline doctrine of 
dimorphism to the chemical doctrine 
of isomorphism, 209; desiderata, 
214. 
Keilhau’s (M.) magnetic observations, 
22. 
King’s (Capt.) observations on the 
magnetic intensity of the earth, 
15. 
Kupffer’s (M.) magnetic observations, 
25. 
INDEX I. 
Lenz, (M.) on the magnetic intensity 
of the earth, 13. 
Lloyd's (—.) magnetical observations, 
33 
Lubbock, (J. W.) on the tides, 103, 
Liitke’s (Capt.) observations on the 
magnetic intensity of the earth, 13. 
Magnetic intensity of the earth 1; ob- 
servations made by:— Rossel, 3; 
Humboldt, 5; Humboldt and Gay 
Lussac, 7; Sabine, 11, 19,33; Erich- 
sen 11; Keilhau, 11, 22 ; Boeck, 11; 
Erman, 11, 23; Liitke, 13; King, 15; 
Hansteen and Due, 23; Kupffer, 25; 
Quetelet, 26; Douglas, 27; Fitzroy, 
32; Rudberg, 33°; Lloyd, 33 ; Ross, 
33; Estcourt, 35; Freycinet, 35; 
Forbes, 41; general table of inten- 
sities, 42; general conclusions, 63 ; 
Fuss’s observations, 497, 
Manufactures of Dukhun, on the, 325. 
Medical Section, reports of the, 139 
161. 
Minerals of Dukhun, 229. 
Mines, on the temperature of, 134. 
Monomorphous groups, table of, 175. 
Music for the blind, 97. 
Nutation, determination of the con- 
stant of, 127. 
Plants, on their growth in closed glass 
vessels, 501. 
Printing for the blind, on the various 
modes of, 87; mathematics, 96; 
music, 97; a comparison between 
the advantages and disadvantages 
of the common Roman and arbi- 
trary alphabets, 98. 
Pseudomorphous mineral substances, 
list of, 195. 
Quetelet’s (M.) magnetic observations, 
26. 
Rees (Dr.) on the analysis of the 
glands, &c. of the human body, 149. 
Reptilia of Dukhun, 251. 
Rivers of Dukhun, 257, 259, 260, 
Robison (Sir J.) on waves, 417. 
Robinson (Rev. Dr.) on the determi- 
nation of the constant of nutation 
by the Greenwich observations, 127. 
Ross’s (Capt.) magnetic observations, 
33. 
