  This short note describes the history of cosmic ray research. A part of this
document was presented orally at the international conference of CRIS 2010 held
in Catania, Italy. The document is written being based on the English
translation of a Japanese article entitled "One Hundred Years of Research on
Cosmic Rays". The document was published in 2008 by the Japan Astronomy Society
as a series of books on "Modern Astronomy" (Volume 17).
