Stone in the bladder, new species of,
222 Analytical examination of, 223
Strata in the mountains of Norway and
Sweden, observations on, confirming
the theory of M. Von Humboldt, 384
Sugar of grapes, how far improved in
France, $80
Sulphur and phosphorus, different re-
sults of experiments on, 31
T.
Tadpole state of reptiles, 352
Thenard, M. on the oxides of iron
and the methods of producing them,
186-Remarks on his theory of the
metallization of the alkalis, 245
Thermometer, spirit, diminution of di-
latability of, 73
Thomson, Dr. Thomas, his analysis of
two new metals from Greenland, one
containing a new metallic oxide, the
other soda and muriatic acid, 78-
His analysis of fluor spar, 157
Tin mines in France, discovered, 381
Tobacco, a substitute for, used by the
Norwegians, 381
Tortoises, their organs of respiration,
353
Tfees, what parts of them first impaired
by age, 275-Analogy between ve
getable and animal organs, 276-
Decay of trees not occasioned by a
deficiency of the roots, 277-Circu-
lation of the sap through the leaves,
278-Down on leaves a symptom of
decline, 279-See Flowers, and Plants
Vauquelin, M. 384
Volition in plants; query if they have
Volta, Sig. his removal of the difficul
ties attending the doctrine of positive
and negative quantities in electri-
city, 3
Urine, how affected by the alkalis, 127
W.
Water, questions on the nature of,
153-Observations in reply, 154
Waterspout observed at Ramsgate, 78
Wernerian society of natural history,
proceedings at, 817, 379
Werner's "Theory of the Formation of
Veins," with its application to the art
of working mines, a translation of,
recently published, 79
Wollaston, Dr. W. H. on cystic oxide,
a new species of uuinary calculus, 222
Wind instruments, improvement in the
tone of, 382
Zinc and copper, Vauquelin's mode of
separating ineffectual, 384
Zoophytes, genera of, which afford
light, 41
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