Pocket Magnifying Glasses.
After examining some scores of different sorts, we have been able to get one combining the greatest power with the largest field obtainable for pocket use. These glasses are mounted in handsome vulcanite frames, and are very compact. There are two lenses in each, which may be used singly, or if a very strong power is desired, may be combined.
Price 7/6; post-free, 7/7; abroad, 8/4.