"The phaenomena afforded by trades, are a part of the history of nature, and therefore may both challenge the naturalist's curiosity and add to his kno...
Those distinct substances, which concretes generally either afford, or are made up of, may, without very much inconvenience, be called the elements or principles of them.
Photo by Ákos Szabó
Photo by Ian Turnell
Those distinct substances, which concretes generally either afford, or are made up of, may, without ...
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