"It was a great achievement of the early chemists—with the crude experimental techniques available also with the ever-…"

"I have raised a question which may be regarded as heretical. At the time when our modern conception of chemistry firs…"

"1. Small particles called atoms exist and compose all matter; 2. They are indivisible and indestructible; 3. Atoms of…"

"That the forms of natural bodies may depend upon different arrangements of the same particles of matter has been a fa…"

"[[w:Chlorine|[C]hlorine]] possesses the singular power of removing the of certain bodies, replacing it atom for atom.…"

"Some recent work by E. Fermi and L. Szilard, which has been communicated to me in manuscript, leads me to expect that…"

"[T]he purpose of my paper would be entirely attained if I succeed in turning the attention of investigators to the re…"

"No matter how properties of simple bodies may change in the free state, something remains constant, and when the elem…"

"1. The elements, if arranged according to their atomic weights, exhibit an evident periodicity of properties. 2. Elem…"

"I have presented the as a kind of travel guide to an imaginary country, of which the elements are the various regions…"