WE have received from Messrs. W. Watson and Sons, Ltd., the new edition of their catalogue of microscopes and accessories (Parts 1 and 2). The pages devoted to principles of construction on the ...

WE are very doubtful whether the first portion of this book, dealing with the practical construction of a microscope by the amateur, will serve any useful purpose. Such an instrument, however well ...

A new microscope can be printed on a flat piece of paper and assembled with a few extra components in less than 10 minutes. All the parts to make it cost less than a dollar, according to Stanford ...