Invisible ___ (something a spy might write with)

Usage examples of ink.

Accordingly, the finger may be dipped into acetone for several seconds, removed, and be permitted to dry, after which it is inked and printed.

If this fails, the finger is wiped off with a piece of cloth which has been saturated with alcohol, benzine or acetone, after which it may be inked and printed.

There is no independent data indicating any variation whatever in the methods of the admixture of black or colored inks, which differentiates them from those used in the earliest times of the ancient Egyptians, Hebrews or Chinese.

Frequent mention is made of sour galls, aleppo galls, green and blue vitriol, the lees of wine, black amber, sugar, fish-glue and a host of unimportant materials as being employed in the admixture of black inks.

Many of the tests specified in the Allen citation to determine the character of ink constituents, if made alone are practically valueless, because the same behavior occurs with different materials employed in the admixture of ink.

June, 1896, great stress was laid on the fact of the difference in the admixture of inks found on letters contemporaneous with the date of the will, and it was asserted also that the ink with which the will was written was not in existence at the time it was alleged to have been made, June 14, 1873, and probably not earlier than ten years later.

Then there was a small library of other books, including a medical lexicon published in London and an almanac beginning at the year 1731, the Holy Bible, ink, pens and writing paper, a box of watercolours and brushes, reams of fine-quality drawing paper, knitting needles and wool, a roll of soft tanned leather from which to make the uppers for footwear- the soles would be cut from buffalo rawhide.

What a preposterous glut of paper and ink he has amassed, loose leaves and envelopes and journals with spines and notebooks sewn with string, all neatly filled with his blockish, inelegant handwriting, all annotated with symbols in his own private code, signifying such things as further study needed or but is this really true?

Using ink and aquarelle I can paint a lakescape of unsurpassed translucence with all the mountains of paradise reflected therein, but am unable to draw a boat or a bridge or the silhouette of human panic in the blazing windows of a villa by Plam.

Seys and Brewer, 1858, applied aqueous solutions of ferrocyanide of potassium or other salts, which formed an indelible compound with the ferruginous base of writing ink.

At least Arioso wrote a fairly clear hand and used expensive ink that had not faded.

It reminded me of a sepia painting I had once seen done from the ink of a fossil Belemnite that must have perished and become fossilized millions of years ago.

He takes down a worn volume, blowing off dust, and hands it to Berel, open to the flyleaf, on which a name and address are inked.

I have pens of reed and can make ink of various colours, who in the bygone days was no mean scribe.

In olden times they were introduced into ink with an honest belief that it would also improve and ensure its lasting qualities, but latterly more often to cheapen the cost of its manufacture.