"Compared with previous years the mortality of the Department during the past year has been light." * * * * * BOSTON FIRE DEPARTMENT. JOHN W. REGAN, Ass't Chief. Boston Fire Department, } BOSTON, May 23, 1889.} JAROS HYGIENIC UNDERWEAR CO., Chicago, Ill. MR. JAROS--Dear Sir:--There has been so great a progress in the excellence of service in our Fire Department that it is safe to say we are now at a time when it is necessary to consider matters that will preserve the good condition of our working forces (the firemen). The work you are doing in this direction deserves encouragement with Fire Departments; for a recount of the value of proper underwear comes strikingly before us after the use of the "Jaros Hygienic Underwear." The experience of our men has been very satisfactory indeed in every manner, protecting against the dangerous influences of the extremes that a fireman must suffer in winter. My first impulse was to consider the claims you made as exaggerated, but a few facts which are my experience will illustrate to you how fully this underwear meets the ideals for protection. I have been a sufferer of rheumatism for many years, contracted in service. Since I have worn your underwear it has not troubled me at all, though I have been subjected to trying service the last winter. On Saturday evening, the 6th of October, 1888, I put on your underwear. It was cold and wet, typical New England weather. We had a fire in a six-story building on the water front lasting four hours. I came out of it with the water coming out of the tops of my rubber boots, _completely wetted through_, so that I had to undress in the yard of my dwelling when I got home. No ill effects were the result of that; when otherwise I would have cough, cold, and surely rheumatic attacks. About November 15th we had a very bad fire and had to fight it three flights before we got to the top, the sixth story. Usually I get wet at a fire. In this I did not, but instead I became thoroughly overheated from wearing a very heavy pilot cloth coat and the result was, that I got _sweated through_ and _through_. I did not get home until 3 o'clock in the morning (nearly six hours), but _I felt splendid_. With other underwear, best woolen, I always experienced a cold wet sensation under similar circumstances, down my back, and generally miserable until I could make a change. This I consider the most important test for firemen and I feel more than ever that the "Jaros Hygienic Underwear" fills a long felt want in Fire Departments. I cheerfully say: I would not be without it and many of our men join me in this and say money cannot buy it from us. Wishing you further success in the introduction of a truly meritorious article and one based on scientific principles, I am Yours truly, JOHN W. REGAN, Ass't Chief. * * * * * NEW HAVEN, CONN., FIRE DEPARTMENT.