An experimental history of the materia medica, or of the natural and artificial substances made use of in medicine, etc
Author: William LEWIS (M.D.)
Publisher:
Published: 1761
Total Pages: 654
ISBN-13:
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Author: William LEWIS (M.D.)
Publisher:
Published: 1761
Total Pages: 654
ISBN-13:
DOWNLOAD EBOOKAuthor: National Library of Medicine (U.S.)
Publisher:
Published: 1887
Total Pages: 1104
ISBN-13:
DOWNLOAD EBOOKAuthor: Lancashire and Cheshire Antiquarian Society
Publisher:
Published: 1927
Total Pages: 460
ISBN-13:
DOWNLOAD EBOOKIncludes the Society's proceedings and list of members.
Author: Wigan (England). Public Libraries Committee
Publisher:
Published: 1925
Total Pages: 196
ISBN-13:
DOWNLOAD EBOOKAuthor: Peter M. Barczak
Publisher: Piotr Barczak
Published: 2022-10-03
Total Pages: 432
ISBN-13: 8395943776
DOWNLOAD EBOOKBaltic amber fascinates thousands of tourists who come to the Baltic Sea. Small children and their parents are eager to bury the sand while looking for precious resin. It is not easy to find, and every large piece of amber found in the “cucumber season” makes headlines. Another category of amber hunters are professionals. These are people who make a living from extracting amber of jewelry value, because each piece of fossilized resin has quite a lot of value. This group is quite hermetic, and the places and methods of extraction remain in the sphere of understatement and are shrouded in a certain mystery. The aforementioned group is particularly interested in the uniqueness of Baltic amber, created by “ancient” rivers, that was already traded by Persians, Vikings and Mycenaeans. From this group, wonderful jewelry products are created. In this book, however, I deal with another aspect of Baltic amber. The initial idea was to analyze the knowledge of this fossilized resin in various aspects. The difficulty in getting to know amber is related to the multidimensionality of the issue. The problem is that science likes to specialize to be precise. This, however, limits knowledge of the issue of amber. If we deal with the question of the formation of the resin, we touch upon issues in the field of geology. This field is enough to fill many years of research and work of a scientist. You can look back a hundred thousand years ago, or into the past millions of years or tens of millions of years, which means that we delve into such vast knowledge that the life of one person may be too short to study the issue well.Then, what do we find in amber? Insects. Thousands of insects. Every geological epoch, each geological era means different families and different species of preserved insects, all of which are to be obtained, dissected, and described in scientific articles. Again, work for a lifetime, infinitely long, because we reach millions of years into the past, and not even in one specific place on the planet – we need to look through the entire planet, because it has been changing over millions of years. What about the plants? After all, they created succinite at different stages of development. What were they like? Are those plants we know today the same ones that existed millions of years ago? Further, some species have become extinct, some have evolved, some grow today in China and others in New Zealand or New Caledonia. Then there is chemistry, the compounds found in amber… Terpenes have already been counted; 40,000. And they can be found in amber. Maybe not in that number, but – since amber was found in peat, brown coal, surrounded by minerals, sediments, and rocks – it could have absorbed the catalog of chemical compounds occurring in the world of plants, trees and shrubs, and also essential oils.
Author: Infirmary for the Sick and Lame Poor of the Counties of Durham, Newcastle upon Tyne, and Northumberland
Publisher:
Published: 1847
Total Pages: 78
ISBN-13:
DOWNLOAD EBOOKAuthor: William Lewis
Publisher:
Published: 1761
Total Pages: 660
ISBN-13:
DOWNLOAD EBOOKAuthor:
Publisher:
Published: 1887
Total Pages: 1102
ISBN-13:
DOWNLOAD EBOOKAuthor: Library of the Surgeon-General's Office (U.S.)
Publisher:
Published: 1887
Total Pages: 1102
ISBN-13:
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