In 1886 Eugen Goldstein discovered canal rays (also known as

anode rays) and showed that they were positively charged

particles (ions) produced from gases. Menas,originally

Goldstein postulated that there were some positively charged

particles... but he didn't say that they were Protons!!

Following the discovery of the atomic nucleus by Ernest

Rutherford in 1911. This was confirmed experimentally by

Henry Moseley in 1913 using X-ray spectra. In 1919

Rutherford proved that the hydrogen nucleus is present in

other nuclei, a result usually described as the discovery of

the proton.