Refraction and muscular imbalance, by Daniel Woolf 71517 [Author: Daniel Woolf] [Link: https://www.gutenberg.org/7/1/5/1/71517] [Files: 71517-0.txt; 71517-h.htm] Thanks to deaurider and the Online Distributed Proofreading Team at https://www.pgdp.net (This file was produced from images generously made available by The Internet Archive) Regards, Al