IN connection with this subject, which was referred to in Mr. Terrill's letter in NATURE for May 17, perhaps the following homely way of illustrating the fact that the combination of two complementary ...

YESTERDAY evening I was reading Goethe's account of his visit to the falls of Schaffhausen (“Journey to Switzerland in 1797”). After mentioning that the morning was a misty one, and describing the ...

Für diese Arbeit wird derzeit ein Zertifikat von der Max, Binia und Jakob Bill Stiftung ausgestellt.