To Make A Luminous Water That Shall Give Light By Night

Take the tails of glowworms, put them into a glass still, and distill them in balneum. Pour the said water upon more fresh tails of glowworms. Do this four or five times and you shall have a most luminous water by which you may see to read in the darkest night.

Some say this water may be made of the skins of herring, and for ought I know, it may be probable enough. For I have heard that a shoal of herring coming by a ship in the night have given a great light to all the ship.

It were worth the while to know the true reason why glowworms and herring and some other such like things should be luminous in the night.

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