The following is an extract from Frankenstein by Mary Shelley. I'd like to know whether the use of "as well . . . as" is natural in current English and what it means here.
When I had arrived at this point, and had become as well acquainted with the theory and practice of natural philosophy as depended on the lessons of any of the professors at Ingolstadt, my residence there being no longer conducive to my improvements, I thought of returning to my friends and my native town, when an incident happened that protracted my stay.