Books with author ROBERT HARDY

This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1840 Excerpt: ...the protosulphide in assuming a black colour, which, however, may be changed to red by sublimation. 1681. The bisulphide (artificial cinnabar) is procured in the large way, by fusing one part of sulphur, stirring in gradually six or seven of mercury, and subjecting the resulting black mass to the process of sublimation in close vessels. 1682. Kirchoff procured cinnabar by a long continued trituration of mercury and sulphur with a solution of caustic potash, aided by a gentle heat., 1683. Bisulphide of mercury is attacked neither by sulphuric, nitric nor chlorohydric acid, nor by caustic alkaline solutions; but when subjected to chlorine, either in aqueous solution as in aqua regia, or in the gaseous form, it is converted into bichloride of mercury, and bichloride of sulphur. 1684. Berzelius alleges that this bisulphide performs the part of a base in combining with the aeriform sulphacids. It also forms compounds with the bichloride, bibromide, biiodide, and bifluoride of mercury. 1685. Equal parts by weight of mercury and sulphur, triturated together, form a black mass, called, from its colpur, Ethiops mineral, which is now considered as a mixture of bisulphide of mercury and sulphur. Guibourt, who has been mentioned as questioning the existence of more than one oxide of mercury, has alleged his disbelief in the existence of more than one mercurial sulphide; the black sulphide being, in his opinion, a mixture of the red with the metal. Seftstrom controverts this allegation, and Thenard, citing his opinions and that of Guibourt, inclines in favour of those of Seftstrom. Thenard alleges that at least the protosulphide exists as a base, in combination with sulphides, acting of course as sulphacids agreeably to my definition. (631.) Of the Phogphurets of Mercur...

Patch is a black and white border collie dog. Along with the 10 children’s books, there are lots of characters that help Patch around the farm. Animals characters including the following:Cats, Chickens, Cows, Dogs, Ducks, Goats, Horses, Pigs, Roosters and Sheep.Fetch Patch helps children to develop vital skills, such as communication and reading, and teaches them about different aspects of life on a farm. In a world where many children are unaware where their food comes from, this is a wonderful opportunity for them to get to grips with the entire food-production process right from planting the first seed.

Patch is a black and white border-collie dog. Along with the 10 children’s books, there are lots of characters that help Patch around the farm. Animals characters including the following:• Cats, Chickens, Cows, Dogs, Ducks, Goats, Horses, Pigs, Roosters and SheepFetch Patch helps children to develop vital skills, such as communication and reading, and teaches them about different aspects of life on a farm. In a world where many children are unaware where their food comes from, this is a wonderful opportunity for them to get to grips with the entire food-production process right from planting the first seed.

Patch is a black and white border-collie dog. Along with the 10 children’s books, there are lots of characters that help Patch around the farm. Animals characters including the following:• Cats, Chickens, Cows, Dogs, Ducks, Goats, Horses, Pigs, Roosters and SheepFetch Patch helps children to develop vital skills, such as communication and reading, and teaches them about different aspects of life on a farm. In a world where many children are unaware where their food comes from, this is a wonderful opportunity for them to get to grips with the entire food-production process right from planting the first seed.

This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work. This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.

A compendium of the course of chemical instruction in the Medical department of the Univesity of Pennsylvania. This book, "A compendium of the course of chemical instruction in the Medical department of the Univesity of Pennsylvania", by Robert Hare, is a replication of a book originally published before 1836. It has been restored by human beings, page by page, so that you may enjoy it in a form as close to the original as possible.

This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work.This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.

This book was originally published prior to 1923, and represents a reproduction of an important historical work, maintaining the same format as the original work. While some publishers have opted to apply OCR (optical character recognition) technology to the process, we believe this leads to sub-optimal results (frequent typographical errors, strange characters and confusing formatting) and does not adequately preserve the historical character of the original artifact. We believe this work is culturally important in its original archival form. While we strive to adequately clean and digitally enhance the original work, there are occasionally instances where imperfections such as blurred or missing pages, poor pictures or errant marks may have been introduced due to either the quality of the original work or the scanning process itself. Despite these occasional imperfections, we have brought it back into print as part of our ongoing global book preservation commitment, providing customers with access to the best possible historical reprints. We appreciate your understanding of these occasional imperfections, and sincerely hope you enjoy seeing the book in a format as close as possible to that intended by the original publisher.