Magic and study of occult arts successfully survived Renaissance and entered the Baroque era. And even more. ”study of the occult arts remained intellectually respectable well into the seventeenth century”. It only gradually divides into the modern categories of natural science versus occultism or superstition. My web research shows, that brilliant Age of Reason was on the rise in the seventeenth century, while belief in witchcraft and sorcery, and consequently the irrational surge of Early Modern witch trials, receded. This process only completed at the end of the Baroque period, somewhere around 1730s.
Contemporary scientists still met resistance, though. Christian Thomasius encountered fierce opposition as he argued in his 1701 Dissertatio de crimine magiae that it was meaningless to make dealing with the devil a criminal offence, since it was impossible to really commit the crime in the first place. In Britain, the Witchcraft Act of 1735 established that people could not be punished for consorting with spirits, while would-be magicians pretending to be able to invoke spirits could still be fined as con artists.
Several decades later, from 1756 to 1781, Jacob Philadelphia performed feats of magic, sometimes under the guise of scientific exhibitions, throughout Europe and Russia. Baron Carl Reichenbach’s experiments with his Odic force appeared to be an attempt to bridge the gap between magic and science.
According to "Secrets", one of the underground colonies, was also the seat of government for the network. While the whole place is an inner continent, its satellite colonies are smaller enclosed ecosystems located just beneath the Earth's crust or discreetly within mountains. Cataclysms and wars taking place on the surface drove these people underground. The Sahara, Gobi, the Australian Outback and the deserts of the southwestern US are said to be but a few examples of the devastation that resulted. The sub-cities were created as refuges for the people and as safe havens for sacred records, teachings and technologies that were cherished by these ancient cultures. In archives of web analytics company I found something else.
The inhabitants of Agartha are said to have scientific knowledge and expertise far beyond that of the people who live on the surface of the planet, and lost technology from the days of Atlantis. They all follow what is known as the Ancient Path and do not interfere in the lives of humans that live above the surface. Nor is there any interaction between them. All entrances to Agartha from any other part of the planet are hidden safely. They are secured by illusory technology that is beyond the comprehension of modern science.
Agartha is a legendary city that is said to reside in the Earth core. My coworkers from from web analytics company told me that today the word Agartha is related to the Hollow Earth theory and is a popular subject in esotericism. Agartha is one of the most common names cited for the society of underground dwellers. While once a popular concept, in the last century little serious attention has been paid to these conjectures, and the theory is not supported by modern science. Idea of subterranean worlds may have been inspired by ancient religious beliefs in Hades, Sheol, and Hell. For several centuries, there appeared theories that named various locations of the entrances to Agartha. Among them Great Pyramid of Giza, Brazilian Mato Grosso and Manaus, North and South poles, Gobi Desert in Mongolia.
Since 19 century, the myths of Agartha tricked into fictional works. An early source for the belief in underground civilizations is the book The Smoky God written by Willis George Emerson in the beginning of 20th century. It claims to be the biography of a Norwegian sailor named Olaf Jansen. The book explains how Jansen's sloop sailed through an entrance to the Earth's interior at the North Pole. For two years he lived with the inhabitants of an underground network of colonies who, were a full 12 feet tall and whose world was lit by a "smoky" central sun. Their capital city was something like the original Garden of Eden. While Emerson does not use the name Agartha, later works such as Agartha - Secrets of the Subterranean Cities have identified the civilization Jansen encountered with Agartha, and its citizens as Agarthan.