Experiments and observations made with the view of improving the art of composing and applying calcareous cements, and of preparing quick-lime : theory of these arts : and specification of the author's cheap and durable cement for building, incrustation, or stuccoing, and artificial stone / by Bry. Higgins, M. D.

Bryan Higgins

Date:: 1780

Credit: Experiments and observations made with the view of improving the art of composing and applying calcareous cements, and of preparing quick-lime : theory of these arts : and specification of the author's cheap and durable cement for building, incrustation, or stuccoing, and artificial stone / by Bry. Higgins, M. D. Source: Wellcome Collection.

Provider: This material has been provided by Royal College of Physicians, London. The original may be consulted at Royal College of Physicians, London.

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$[ 5» ] frefhed and bed chalk lime flaked, fix parts of fand, and water q. f; for in a great number of experiments, 1 obferved that this propor- tion of lime was better than any larger which I had tried, or which the workmen obfervc in making mortar. I formed the mortar into an hemifphe- rical heap on the paved floor of a damp cel- lar, where it remained untouched twenty- four days. At the expiration of this time, I found it hardened at the fur face ; but moid, and rather friable or fhort than plaffic in the interior parts of it. I beat the whole of it with a little water to its former confidence; and with this mortar and clean new bricks, 1 built a wall eighteen inches fquare and half a brick in thicknefs, in a workman-like manner. On the fame day I made mortar of the fame kind and quantities of frefh chalk lime and fand, tempered in the fame manner; and I built a wall with it, like the former, near it, and expofed equally to the weather. \ i$

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