The Poetry Society will hold its first social meeting today in the Advocate Sanctum on the third floor of the Union at 4 o'clock. Robert Frost, a rising young American poet, will read selections from his own writings. He is a native of New Hampshire and his book on northern New England called "North of Boston" has been pronounced by critics as among the leading works of the day. His other book, "A Boy's Way" has also gained much favor both in England and America. Mr. Frost has left his farm in New Hampshire in order to deliver lectures in Boston under the auspices of Mr. Browne, of Browne and Nichols School.