 | john forbes m.d. f.r.s .f.g.s - 1841 - 606 pages
...satisfactory. The following extract explains very clearly, and in familiar language, the theory of the pro«*: "To understand the nature of the process, it will be necessary to advert, b > general way, to a few long-known chemical properties of the familiar substuxt chalk ; for chalk... | |
 | Pharmacy - 1843 - 800 pages
...the application of his method of purifying water. The following is the theory of the process : — " To understand the nature of the process, it will be...few long-known chemical properties of the familiar i substance chalk ; for chalk at once forms the bulk of the chemical impurity that the process will... | |
 | Edward Cresy - 1847 - 912 pages
...advert to a few chemical properties of the familiar substance chalk, which at once forms the bulk of the impurity that the process will separate from water,...whence the ingredient for effecting the separation is obtained. In water chalk is almost or altogether insoluble ; but it may be rendered soluble by either... | |
 | John Mitchell - Food - 1848 - 500 pages
...in use. The following extracts, from a pamphlet published by him, will fully point out his method. " To understand the nature of the process, it will be necessary to advert, in a general way, to a few well long-known chemical properties of the familiar substance — chalk ; for chalk at once forms the... | |
 | Robert Scott Burn - Domestic engineering - 1872 - 284 pages
...rendered very hard by the presence of carbonate of lime or chalk, which has been very successful : " To understand the nature of the process, it will be necessary to advert, in a general way, to a few long known chemical properties of the familiar substance, chalk ; for chalk at once forms the bulk... | |
 | Charles William Chancellor - Public health - 1887 - 204 pages
...successful, and is thus described : " To understand the nature of the process, it will be neces" sary to advert, in a general way, to a few long-known chemical " properties of the familiar substance, carbonate of lime ; for "carbonate of lime at once forms the bulk of the chemical "impurity that the... | |
 | Maryland. State Board of Health - Public health - 1888 - 688 pages
...by boiling or by the process of Dr. Clark, which has been very successful, and is thus described : "To understand the nature of the process, it will...be "necessary to advert, in a general way, to a few long" known chemical properties of the familiar substance, "carbonate of lime; for carbonate of lime... | |
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To understand the nature of the process, it will be necessary to advert, in a general way, to a few long-known chemical properties of the familiar substance chalk ; for chalk at once forms the bulk of the chemical impurity that the process will separate... 