Balfour Stewart (1828-1887) co author with PG Tait Published 1875
The book is mostly interesting as a record of beliefs laid out concerning the Seen and the Unseen as the title itself states.
Reconciling modern physics, -that is, modern in the 19th century, with Christianity, or simply God. Beginning with the ancients, the Egyptians, Hebrew, Greeks and Romans, Eastern Aryans, moving forward to the era of the 1800's when the book was published.
"The earth is not unlike the human brain, in that it contains in itself certain memories of the past, and just as we rummage out and hunt up in our brains old memories, so do the historian and the antiquary search about in the earth for that memory which it retains of those distant but glorious ages. But the universe, no less than the individual, has another memory besides the material one, and we have endeavored to convince our readers that nothing is really lost, the past being always present in the universe. "


