Reading a Google copy of Jabez Hogg's 1861 manual "The Principles and Practice of Photography" I found the following timely advice on Defects, Failures and Remedies.

I'm printing copies of this for my students.



Seán

Love it! Here's is my favorite passage:

"It is certain that the clever operator will sometimes make good pictures under the most unfavorable circumstances; in many cases difficulties only stimulate to ingenuity in overcoming them, and in no instance known to the writer is there a greater demand for those qualities of invention and ingenuity, which enables their possessor to rise superior to every difficulty, than in the practice of photography, in any of its branches, under a small top light or beside a window in some lonely, out-of-the-way place, where the people are all sunburnt and rough-skinned, and even the pretty girls are sadly tanned by exposure to the weather." - The Ferrotype and How to Make It.