 Write with a solution of muriate of cobalt, and the writing, while dry, will not be perceptible ; but if held towards the fire, it will then gradually become visible ; and if the muriate of cobalt be made in the usual way, the letters will appear of an...  The Philosophy of Experimental Chemistry - Page 156by James Cutbush - 1813 - 694 pagesFull view - About this book
 | Samuel Parkes - Chemistry - 1807 - 382 pages
...muriate of cobalt be made in the usual way, the letters will appear of an elegant GREEN colour. 94. Write with acetate of cobalt, or with a muriate of...the paper a little, and the writing will be restored of a beautiful BLUE. 95. Draw a landscape with Indian ink, and paint the foliage of the vegetables... | |
 | Samuel Parkes - Chemistry - 1814 - 584 pages
...be made in the usual way, tlie letters will appear of an elegant GRliEN colour. See page 345. 102. Write with acetate of cobalt, or with a muriate of...little, and the writing will be restored to a beautiful bLUii. See notec, page 347. 103. Draw a landscape with Indian ink, and paint the foliage of the vegetables... | |
 | Samuel Parkes - Chemistry - 1816 - 584 pages
...cobalt be made in the usual way, the letters will appear of an elegant GREEN colour. See page 345. 102. Write with acetate of cobalt, or with a muriate of...the writing will be restored to a beautiful BLUE. See note i , page 347. 103. Draw a landscape with Indian ink, and paint the foliage of the vegetables... | |
 | Samuel Parkes - Chemistry - 1818 - 616 pages
...cobalt be made in the usual way, the letters will appear of an elegaut GREEN colour. See page 329. 141. Write with acetate of cobalt, or with a muriate of...previously purified from the iron which it generally containsj When the writing is become dry, these letters will also be invisible. Warm the paper a little,... | |
 | Hugo Reid - Chemistry - 1837 - 402 pages
...muriate of cobalt be made in the usual way, the letters will appear of an elegant green colour. 102. Write with acetate of cobalt, or with a muriate of...the writing will be restored to a beautiful blue. 103. Draw a landscape with Indian ink, and paint the foliage of the vegetables with muriate of cobalt,... | |
 | Practical chemist - Cooking - 1844 - 374 pages
...muriate of cobalt be made in the usual way, the letters will appear of an elegant green colour. 3. Write with acetate of cobalt, or with a muriate of...the writing will be restored to a beautiful blue. 4. Draw a landscape with Indian ink, and paint the foliage of the vegetables with muriate of cobalt,... | |
 | Samuel Parkes - 1854 - 232 pages
...muriate of cobalt be made in the usual way, the letters will appear of an elegant green colour. 102. Write with acetate of cobalt, or with a muriate of...the writing will be restored to a beautiful blue. 108. Draw a landscape with Indian ink, and paint the foliage of the vegetables with muriate of cobalt,... | |
 | Ernest Spon - Chemistry - 1879 - 478 pages
...be made in the usual way, the letters will appear of an elegant green colour. 3. Write with acetate of cobalt previously purified from the iron which it generally contains. When the writing is dry, these letters will be invisible. Warm the paper a little, and the writing will be restored to... | |
 | Industrial arts - 1883 - 496 pages
...be made in the usual way, the letters will appear of an elegint green colour. 3. Write with acetate of cobalt previously purified from the iron which it generally contains. When the writing is dry, these letters will be invisible. Warm the p;iper a little, and the writing will be restored to... | |
 | Science - 1842 - 446 pages
...arising from different degrees ofoxidizement. Write with acetate of cohalt, or with a muriate of cohalt, previously purified from the iron which it generally...the writing will be restored to a beautiful blue, Put a little fresh calcined magnesia in a tea-cup upon the hearth, and suddenly pour over it as much... | |
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