Who was the Scottish chemist that discovered that certain substances could be seperated from certain other substances by dialysis?

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<a href="http://qanda.encyclopedia.com/question/scottish-chemist-discovered-certain-substances-could-seperated-certain-other-substances-dialysis-84080.html" >Who was the Scottish chemist that discovered that certain substances could be seperated from certain other substances by dialysis?</a>

The Scottish chemist Thomas Graham discovered (1860) that certain substances (e.g., glue, gelatin, or starch) could be separated from certain other substances (e.g., sugar or salt) by dialysis . He gave the name colloid to substances that do not diffuse through a semipermeable membrane (e.g., parchment or cellophane) and the name crystalloid to those which do diffuse and which are therefore in true solution.