DES 
Degradation in western New York, 
G. £. Hayes, xxxv, 88. 
De la Beche, H. T., rocks of Eu- 
rope, Classification of, xvili, 26. 
De Lalande, notice of, iv, 381. 
——, prizes founded by, xxv, 190. 
Dela Rive, A., galvanic instrument 
by, v, 395. 
and Macaire, experiments on 
muriatic acid, x1, 393. 
» present state (1833) of the 
principles in electricity, xxvi, 175. 
XXxiv, 6. 
De la Rue, W., structure of electro- 
precipitated metals, xlix, 390. 
Delirium, Dwight’s cases of, 1, 431. 
Del Rio, A., in reply to Prof. Shep-|—— 
ard, xxx, 384. 
, reply of Prof. Shepard to, 
xxxi, 131. 
De Luc’s column, on the construc- 
tion of, R. Hare, xxv, 136.f 
De Kay, J. E., on the Pennatula' 
sagitta of Lamarck, iv, 87. 
, on the supposed transporta- 
tion of rocks, xiii, 348. 
, report on the bones of Big 
Bone Lick, xx, 370. 
report on the fishes of New 
York, notice of, D. H. Storer, 
xlve275: 
Denderah, zodiac of, removed ‘to 
France, v, 191; vi, 200. 
Dent, E. J., a portable mercurial 
pendulum, xxxv, 289. 
, on the errors of chronometers 
and on a new compensation-bal- 
ance, xlv, 83.f 
Denudation by Long Lake and Mud 
Lake, Vt., xi, 39.f 
Descartes, theory of, xxxiii, 3. 
, head, presented to the French 
Institute, iv, 390. 
Deserts, origin of, W. C. Redfield, 
xxv, 184; xxxiil, 261. 
Desfontaines, life and writings of, 
xxvil, 201. 
Deshayes, Tertiary Fossils, Cuvier 
e d Brongniart’s report on, xxiii, 
196. 
66 
, on electro-magnetic currents,}| —— 
DEW 
Desmarest, A. G., notice of, xxxvii, 
124. 
Despretz, C., oncrystallizable acetic 
acid, xxvil, 197. 
Detection of adulterations in alcohol, 
DqD-ey ial less 
in ammonia, xix, 72. 
in arrow root, xix, 72. 
in calomel, xix, 72. 
in castor oil, xix, 77. 
in chromate of lead, xix, 
73. 
in copaiva, xix, ‘73. 
in iodide of potassium, 
x1x, 74. 
in lemon juice, xix, 75. 
a in morphine, xix, 79. 
in oil of sweet almonds, 
xix, 76. 
of olives, xix, 76. 
in peroxide of manga- 
nese, xix, 78. 
in Peruvian bark, xix, 
81. 
in phosphate of soda, 
xix, 82. 
in prussic acid, xix, 70. 
in soda, xix, 83. 
in sulphate of magne- 
sia, xx, 84. 
in sulphate of quinine, 
xix, 84. 
in tartrate of potash, xix, 
85. 
in tartar emetic, xix, 86. 
in vinegar, xix, 86. 
of arsenic, ili, 354; iv, 155; 
xliv, 213. 
——, L. Feuchtwanger on, 
xix, 339.f 
——., Riench’s mode, xiv, 
240. 
—— — ., J.L. Smith on, x|,278; 
xlii, 75.f 
Devonshire, structure of, Sedgwick 
and Murchison, xxxi, 349!; xxxiii, 
85. 
, lines of dislocation in, De la 
Beche, xxxi, 354. 
Dewpoint, remarks on, A. A. Hayes, 
XVill, 63. 
