This is a very little story of a very great man. It contains only a few of the wonderful adventures he met, and the splendid deeds he did. Most of them may never be written. Perhaps they may be lived again in the lives of some of the readers. Who knows? Even this brief account of Dr. Mackay's life could not have been written had it not been for the help of many kind friends. The Rev. . Mackay, ., of Toronto, Canada, who visited Formosa, and met many of the people mentioned in this story, gave me great assistance. Mr. Alexander Mackay, brother of.