
Jöns Jacob Berzelius, An Attempt to Establish a Pure Scientific System of Mineralogy (1814), trans. J. Black, 48.
Jöns Jacob Berzelius Essai sur la théorie des proportions chemiques (1819), 98. Quoted by Henry M. Leicester in article on Bessel in Charles Coulston Gillespie (editor), Dictionary of Scientific Biography (1981), Vol. 2, 94.
Jöns Jacob Berzelius, An Attempt to Establish a Pure Scientific System of Mineralogy (1814), trans. J. Black, 48.
"Cathode rays" http://web.lemoyne.edu/~GIUNTA/thomson1897.html Philosophical Magazine, 44, 293 (1897).
Source: Practical Pictorial Photography, 1898, Printing the picture and controlling its formation, p. 88
p. 49 http://books.google.com/books?id=U6lMnx8AQsYC&q=%22The+meeting+of+two+personalities+is+like+the+contact+of+two+chemical+substances+if+there+is+any+reaction+both+are%22+%22transformed%22&pg=PA49#v=onepage
Modern Man in Search of a Soul (1933)
Variant: The meeting of two personalities is like the contact of two chemical substances: if there is any reaction, both are transformed.
Source: Psychological Reflections: A New Anthology of His Writings 1905-61
Hosts and Guests (1918), Harper's Monthly ( August 1919 http://books.google.com/books?id=H2Q2AQAAMAAJ&q=%22Mankind+is+divisible+into+two+great+classes+hosts+and+guests%22&pg=PA425#v=onepage)
And Even Now http://www.gutenberg.org/dirs/etext99/evnow10.txt (1920)
“What if two negatives make an affirmative …does it follow that two nobodies shall be some body?”
"That Two Heads are Better than One".
Sketches from Life (1846)