CAMDEN, N.J., March 1, 1875.
It affords me pleasure to certify to the very satisfactory working of the Mathews' Fire Hydrant. During the present severe winter they have continued free from the effects of frost while large numbers of the other hydrants have been frozen. Yours truly, WILLIAM CALHOUN, Chief Engineer.

DETROIT, MICH., February 26, 1875.
In response to your inquiry regarding the test the exceptionally cold weather of the present winter has subjected your hydrants to, it gives me pleasure to state that Mr. GASCOIGNE, our Superintendent of Water, reports that not in a single instance have they failed. The only trouble given has been the slight one of occasionally pounding down the frost jacket as the frost heaves it.
FRED. H. SEYMOUR, Sec'y

ROCHESTER, N.Y., February 19, 1875.
We have had very little trouble with your style of hydrant during the cold weather, although we have had over 400 in use. None have frozen except where they were set in area walls, or near lateral sewers, or not at proper depth, and of these very few. Respectfully yours,
J. NELSON TUBBS, Chief Eng. Rochester W.W.

CLEVELAND, O., February 23, 1875.
In reply to your circular of the 15th inst., asking whether any of your hydrants have failed during the recent cold weather, I take pleasure in stating that we have had less trouble with your hydrants than with any other we have in use. Such as have been found frozen have had some obstruction in the waste, but the number found out of order has been comparatively small.
Yours respectfully,
JOHN WHITELAW, Sup't and Engineer.

TOLEDO, O., February 20, 1875.
We have had but few hydrants frozen; with proper drainage for carrying off drip, don't think we should have had a single one frozen. We have given them no artificial protection by boxing, or otherwise. Mercury ranged from zero to 18° below for past two weeks.
J.D.COOK, Chief Eng. And Supt. Toledo W.W.

ELMIRA, N.Y., February 18, 1875.
We have a number of your hydrants in use, which have given good satisfaction during the extreme cold weather; have had a large number of fires during the winter. Have had several hydrants frozen, or broken, by frost, but none of yours among the number.
Respectfully yours,
ELMIRA WATER WORKS CO. (per J.M.D.)