In addition to these nine great outlying plants, with their thousands of workmen, there was the splendidly equipped Research Department at American University, on the outskirts of Washington; the Experimental Field and Proving-Ground near Lakehurst, New Jersey; and the Army Gas Schools at Camp Kendrick, New Jersey, and Camp A. A. Humphreys, Virginia. The tract of land near Lakehurst taken over for experimental purposes was 5 miles long and 4 wide and had an area of nearly 14,000 acres. As the nearest habitation was 2½ miles away no difficulty was experienced in conducting the highly important experiments with the necessary secrecy. The camp included quarters for 50 officers and barracks for 800 men, a completely equipped chemical laboratory, the staff of which included expert glass-blowers who could make every kind of apparatus required, a meteorological station, commanded by a former official of the Government Weather Bureau, equipped with the latest apparatus necessary for making and recording meteorological observations, a mechanical shop containing lathes, drills, and tools for making repairs of every description, an ice-making plant, a post hospital, a goat hospital, a dog hospital, a dog kitchen, and enclosures for animals which had to be kept under observation for long periods. In order to determine the effects of the various gases on living subjects a large stock of animals—goats, dogs, cats, rats, mice, guinea-pigs, and monkeys—had to be kept constantly on hand. These animals were not obtainable in the necessary numbers without considerable difficulty, it being necessary, on one occasion, to send an officer to Mexico to purchase 1,500 Angora goats, experiments having shown that the goat possesses powers of resistance to gas which more nearly approximate those of a human being than does any other common animal. Representatives of these various animal types were placed in trenches modelled after those on the Western Front and bombarded with different forms of gas-shell, those which remained alive being subjected to close observation, sometimes for many days, by the experts of the Pathological and Physiological Department. A human note enters into this grim business of preparing for war in the fact that those animals, particularly the dogs, which survived such an experiment were not subjected to it again. I imagine, however, that the officials of the S. P. C. A. would have entered a vigorous protest had they been permitted to lift the veil of secrecy which for many months enveloped the operations of the Chemical Warfare Service at Lakehurst.