The Principles of Chemistry, Volume II

with water and ammonia, we may add that Lachinoff (1893) showed that CuSO_{4},5H_{2}O loses 4-3/4H_{2}O at 180°, that CuSO_{4},5NH_{3} also loses 4-3/4NH_{3} at 320°, and that o...

The acid character of the higher oxides RO_{3} of the elements of group VI. is still more clearly defined than that of the higher oxides of the preceding groups, whilst feeble b...

Carbon, which gives the compounds CH_{4}, and CO_{2}, belongs to the fourth group of elements. The nearest element to carbon is silicon, which forms the compounds SiH_{4} and Si...

The six metals: ruthenium, Ru, rhodium, Rh, palladium, Pd, osmium, Os, iridium, Ir, and platinum, Pt, are met with associated together in nature. Platinum always predominates ov...

[24] The normal ferric salts are decomposed by heat and even by water, forming basic salts, which may be prepared in various ways. Generally ferric hydroxide is dissolved in sol...

Judging from the atomic weights, and the forms of the higher oxides of the elements already considered, it is easy to form an idea of the seven groups of the periodic system. Su...

Nitrogen is the lightest and most widely distributed representative of the elements of the fifth group, which form a higher saline oxide of the form R_{2}O_{5}, and a hydrogen c...

If a piece of phosphorus be dropped into a flask containing chlorine, it burns when touched with a red-hot wire, and combines with the chlorine. If the phosphorus be in excess,...

drying at 100° has the composition Co_{2}O_{3}10NH_{3}7MoO_{3}3H_{2}O. After ignition this salt leaves a residue having the composition 2CoO_{7}MoO_{3}. An analogous compound is...

Sulphur, selenium, and tellurium belong to the uneven series of the sixth group. In the even series of this group there are known _chromium, molybdenum, tungsten, and uranium_;...

Zinc chloride has a great affinity for water; it is not only soluble in it, but in alcohol, and on being dissolved in water becomes considerably heated, like magnesium and calci...

If the elements of small atomic weight which we have hitherto discussed be placed in order, it will be clearly seen that, judging by the formulæ of their higher compounds, one e...

That degree of analogy and difference which exists between iron, cobalt, and nickel repeats itself in the corresponding triad ruthenium, rhodium, and palladium, and also in the...

[20] The preparation of crystallised alumina is given on p. 65, and in Note 18 bis. When alumina, moistened with a solution of cobalt salt, is ignited, it forms a blue mass call...

It is seen from the examples given in the preceding chapters that the sum of the data concerning the chemical transformations proper to the elements (for instance, with respect...

[13] The laws of nature admit of no exceptions, and in this they clearly differ from such rules and maxims as are found in grammar, and other inventions, methods, and relations...

compounds, and in a similar manner there is for every element in its compounds a tendency to attain a certain highest limit RX_{_n_}. This view was particularly developed in the...

Pictet, i. 81, 129, 137; ii. 31, 241 Picton, ii. 223 Pierre, i. 452, 495; ii. 226, 485 Pierson, i. 93 Pigeon, ii. 377 Pionchon, i. 585 Pistor, i. 399 Plantamour, ii. 5 Plaset, i...

_ERICHSEN._--THE SCIENCE AND ART OF SURGERY; a Treatise on Surgical Injuries, Diseases, and Operations. Tenth Edition. Revised by the late MARCUS BECK, M.S., and M.B. (Lond.), F...

[40] The vapour density of indium chloride, InCl_{3} (Note 31), determined by Nilson and Pettersson, confirms this atomic weight. Indium is separated from zinc and cadmium, with...

cerium. As the above-mentioned elements are rather rare in nature, have but little practical application, and do not present any new forms of combination, it is unadvisable to d...

than for those gases whose molecules contain two atoms (for instance, CO, H_{2}, N_{2}, air, &c., for which _k_ is nearly 1·4) or those whose molecules contain three atoms (for...

_THORPE._--A DICTIONARY OF APPLIED CHEMISTRY. By T. E. THORPE, B.Sc. (Vict.), Ph.D., F.R.S., Treas. C.S., Professor of Chemistry in the Royal College of Science, South Kensingto...

TIDAL RIVERS: their (1) Hydraulics, (2) Improvement, (3) Navigation. By W. H. WHEELER, M.Inst.C.E., author of 'The Drainage of Fens and Low Lands by Gravitation and Steam Power'...

429 De Vries, i. 62, 64, 429 Dewar, i. 3, 5, 135, 139, 163, 297, 563, 565, 569, 585; ii. 176, 220 Dick, ii. 414 Dingwall, i. 486 Ditte, i. 72, 403, 430, 457, 509, 539, 618; ii....

These three metals give, like magnesium, oxides RO, which form feebly energetic bases, and like magnesium they are volatile. The volatility increases with the atomic weight. Mag...

+-------------------------+--------------------------------+ | | | |Molecular composition of | | |the higher hydrogen and | Atomic weights of the elements | |metallo-organic com...

_DU BOIS._--THE MAGNETIC CIRCUIT IN THEORY AND PRACTICE. By Dr. H. DU BOIS, Privatdocent in the University of Berlin. Translated by E. ATKINSON, Ph.D., formerly Professor of Exp...

Columns 7-14 contain the composition of the saline compounds of the elements, placed according to their forms, RX, RX_{2} to RX_{8} (in the 14^{th} column). If the element R has...

Bender, i. 476 Benedict, ii. 65 Berglund, ii. 229 Bergman, i. 27, 435; ii. 100 Berlin, i. 95 Bernouilli, i. 81 Bernthsen, ii. 228 Bert, i. 86, 153 Bertheim, ii. 337 Berthelot, i...

_ASHBY AND WRIGHT._--THE DISEASES OF CHILDREN, MEDICAL AND SURGICAL. By HENRY ASHBY, M.D., Lond., F.R.C.P., and G. A. WRIGHT, B.A., M.B., Oxon., F.R.C.S., Eng. With 192 Illustra...

Amongst the elements of the second and third groups it was observed that the elements were more basic in the even than in the uneven series. It is sufficient to remember calcium...