Chapter XIII. The Invocation Of Saints. 155 in transmission, can now be accomplished in sixty minutes. I can hold a conversation with an acquaintance in San Francisco, three thousand miles away, and can talk to him as easily and expeditiously as if he were closeted with me here in Baltimore. Nay more, we can distinctly recognize one another by the sound of our voice. If a scientist had predicted such events, a hundred years past, he would be regarded as demented. And yet he would not be a visionary, but a prophet. Let us not be unwise in measuring Divine power by our finite reason. If such revelations are made in the natural order, what may we not expect in the supernatural world? If science gives us such rapid and easy means of corresponding with our fellow beings on foreign shores, what methods may not the God of Sciences employ to enable us to communicate with our brethren on the shores of eternity? "There are more things in heaven and earth, Horatio, than are dreamt of in your philosophy." That the spirits of the just in heaven are clearly conversant with our affairs on earth is manifest from the following passages of Holy Writ. The venerable Patriarch Jacob, when on his deathbed, prayed thus for his two grandchildren: "May the angel that [155] delivereth me from all evils bless these boys!"193 Here we see a holy Patriarch — one singularly favored by Almighty God, and enlightened by many supernatural visions, the father of Jehovah's chosen people — asking the angel in heaven to obtain a blessing for his grandchildren. And surely we cannot suppose that he would be so ignorant as to pray to one that could not hear him. The angel Raphael, after having disclosed himself to Tobias, said to him: "When thou didst pray with tears, and didst bury