The progress of the Society was at first slow, and in 1836 only about $28,000 had been collected. This fund was placed in the hands of Gen. Nathan Towson, Samuel H. Smith, and Thomas Munroe, gentlemen of the highest respectability, members of the Society. Under their faithful and judicious management this fund was invested, as also the interest accruing on it, in good stocks or securities. This fund was from time to time augmented by small amounts raised on special occasions by churches, organizations, and meetings of the citizens and collections by agents. The financial difficulties of the Union arising in 1837 operated largely to suspend collections for the monument for several years despite frequent addresses to the people and urgent appeals for funds by the Society and activity by its agents. In this year, 1836, advertisements were published by order of the Society inviting designs from American artists, but no limitation was placed upon the form of the design. It was determined by the Society, and so recommended, that any plans submitted should "harmoniously blend durability, simplicity, and grandeur." The estimated cost for the proposed monument was not less than one million dollars. A great many designs were submitted, but the one selected among the number was that of Mr. Robert Mills, a well known and eminent architect of the times. This plan, as published to the country, was described in the following language: _Description of the Design of the Washington National Monument, to be erected at the seat of the General Government of the United States of America, in honor of "the Father of his Country," and the worthy compatriots of the Revolution._ This design embraces the idea of a grand circular colonnaded building, 250 feet in diameter and 100 feet high, from which springs a obelisk shaft 70 feet at the base and 500 feet high, making a total elevation of 600 feet. This vast rotunda, forming the grand base of the Monument, is surrounded by 30 columns of massive proportions, being 12 feet in diameter and 45 feet high, elevated upon a lofty base or stylobate of 20 feet elevation and 300 feet square, surmounted by an entablature 20 feet high, and crowned by a massive balustrade 15 feet in height. The terrace outside of the colonnade is 25 feet wide, and the pronaos or walk within the colonnade, including the column space, 25 feet. The walks enclosing the cella, or gallery within, are fretted with 30 massive antæ (pilasters) 10 feet wide, 45 feet high, and 7½ feet projection, answering to the columns in front, surmounted by their appropriate architrave. The deep recesses formed by the projection of the antæ provide suitable niches for the reception of statues.