Resumen de 50, 100 & 150 years ago.

• The article presents several reprints of articles which appeared in the July 1860, July 1910 and July 1960 issues of "Scientific American." One July 1960 article was concerned with infant mortality rates in the U.S. One July 1860 article was concerned with British hospital patients who craved tea while in the hospital. Another July 1860 article was concerned with whether lager beer is intoxicating.