| Description | He regrets, but owing to the experiments he has been making, he believes the specimens sent to Larmor will have lost most of their sensitiveness to light and dark. Fresh preparations changed colour in seconds, but he now finds the change back to yellow is either very slow, or does not happen. When Senier's assistant returns from England, they will prepare new specimens, and if the phenomenon is the same, he will send some to Larmor. |