THE author of this convenient and systematic little treatise is Demonstrator of geology in the Imperial College of Science, London, where he has gained experience through the introduction of large I ...

This is a preliminary report and outline of the forms to be included in a comprehensive study of various spores and pollen grains from Carboniferous fructifications. A large number of reproductive ...

WHEN public interest in the curiosities of science was widespread, some fifty years ago, the possession of a microscope was a social necessity. The instrument to-day is no longer the popular plaything ...

Table of metric and English measures and table of natural sines on lining-papers. siris_sil_409278 ...

Researchers at the University of Illinois at Urbana-Champaign have shown for the first time that expensive aberration-corrected microscopes are no longer required to achieve record-breaking ...

How to take still and video images of your favorite specimens: from attaching a camera to choosing a digital camera that photographs directly. When you purchase through links on our site, we may earn ...