is s aqua-regia, when diluted, affords an ink 
which becomes green when held to the 
fire, but disappears again when suffered to 
cool. This has been used in fanciful draw- 
ings of trees, the green leaves of which 
appear when warm, and vanish again by 
cold. This effect has not been explained. 
If the heat be continued too long after 
the letters appear, it renders them per- 
manent. 7. If oxide of cobalt be dis- 
solved in acetous acid, and a little nitre 
added, the solution will exhibit a pale rose 
Colour when heated, which disappears on 
cooling. 8. A solution of equal parts of 
sulphate of copper and muriate of ammonia 
gives a yellow colour when heated, that dis- 
appears when cold. 
Sympathetic inks have been proposed as 
the instruments of secret correspondence. 
But they are of little use in this respect, 
because the properties change by a few 
days remaining on the paper ; most ot them 
have more or less of a tinge when thoroughly 
dry ; and none of them resist the test of 
heating the paper till it begins to be 
scorched. 
INNS and innkeepers. If one who keeps 
a common inn refuse either to receive a 
traveller as a guest into his house, or to find 
him victuals or lodging, upon his tendering 
a reasonable price for them, he is not only 
liable to render the damages for the injury 
in an action on the case, at the suit of the 
party grieved, but also may be indicted 
and fined at the suit of the king. In re- 
turn for such responsibility, the law allows 
him to retain the horse of his guest until 
paid for his keep ; but he cannot retain such 
horse for the bill of tire owner, although he 
may retain his goods for such bill , neither 
can he detain one horse for the food of 
another. An innkeeper, however, is not 
bound to receive the horse unless the mas- 
ter lodge there also. Neither is a landlord 
bound to furnish provisions, unless paid be- 
forehand. If an innkeeper make out un- 
reasonable bills, he may be indicted for ex- 
tortion; and if either he or any of his ser- 
vants knowingly sell bad wine, or bad pro- 
visions, they will be responsible in an action 
of deceit. Keeping an inn is not a trading 
to make a man a bankrupt; hut where an 
innkeeper is a chapman also, and buys and 
sells, he may on that account be a bank- 
rupt. Innkeepers are clearly chargeable 
for the goods of guests stolen or lost out of 
their inns, and this without any contract or 
agreement for that purpose. But if a per- 
son come to an innkeeper, and desire to be 
entertained by him, which the innkeeper 
refuses, because, in fact, his house is already 
full ; whereupon the party says he will shift 
among the rest of his guests, and there he 
is robbed, the host shall not be charged. 
If a man come to a common inn to har- 
bour, and desire that his horse may be put 
to grass, and the host put him to grass ac- 
cordingly, and the horse is stolen, the host 
shall not be charged ; because by law the 
host is not bound to answer for any thing 
out of his. inn, but only for those things that 
are infra hospitium. Innkeepers may de- 
tain the person of the guest who eats till 
payment. By the custom of London and 
Exeter, if a man commit an horse to an 
hostler, and he eat out the price of his head, 
the hostler may take him as his own, upon 
the reasonable appraisement of four of his 
neighbours ; yet he cannot justify the taking 
him to himself at the price it was appraised 
at. 
INNATE ideas, those supposed to be 
stamped on the mind from the first moment 
of its existence, and which it constantly 
brings into the world with it : a doctrine 
which Mr. Locke has abundantly refuted. 
See Idea. 
INNOMINATA ossa, in anatomy, three 
bones, which compose the extreme part of 
the trunk of a human body. 
INNUENDO, is a word used in decla- 
rations and law pleadings, to ascertain a 
person or thing which was named before ; 
as to say he (innuendo the plaintiff) did so 
and so, when there was mention before of 
another person. Innuendo may serve for 
an explanation, where there is precedent 
matter, but never for a new charge ; it may 
apply what is already expressed, but cannot 
add or enlarge the importance of it. The 
doctrine of innuendoes is strangely misun- 
derstood, in the opinion of the writer of 
this article, and has been confounded by 
too much learning and technical distinction 
being applied to it. The meaning of the 
word is 1 limiting, suggesting, or meaning.’ 
All words have different meanings, accord- 
ing to the manner, time, and other circum- 
stances under which they are used. If 
the words are used in their plain sense they 
need no explanation ; if in any other sense, 
then all the circumstances by which that 
sense is to be made out to be the meaning 
pf the .party must be stated, and then the 
pleader may suggest the true meaning in the 
indictment under an innuendo ; but before 
the innuendo is used, the circumstances 
must be stated to which it applies. This is 
