Studies on the Dependence of Optical Rotatory Power on Chemical Constitution. Part VIII. The Stereoisomeric d-, l-, dl-, p-Phenylene-, 1 :4-Naphthylene-, pp'· Diphenylamine-, pp' -Diphenylmethane-bisiminocamphors ; p-Phenylene, pp' -Diphenylmethane-bisaminocamphors; p-Diphenylamineiminocamphors and p-Diphenylamineaminocamphors, and their Derivatives.