IN looking over my spectrum plates of oxygen I find some which show not only the nebular lines λ6300 and λ6364, 1 which had not been produced in the laboratory before, but also a strong line λ6374.29.

Under Sir Thomas Maclear's care, in 1836, at the age of seventeen; at the famous Observatory at the Cape of Good Hope, where, during the last three years, the presence of oxygen was discovered by its ...