Some minds are so fixed to one subject, as to have scarcely any interest in other subjects; some to wander, so as to be scarcely fixable.

CII.

(4 T)

Let not the mind be fixed, but kept open to receive continual amendment.

(4 V)

We ought to form a just estimate of the competence of our senses to acquire knowledge.

Defects of Senses.

CX.

(5 C).

Things escape the senses from some defect of

the senses, as colours to the blind, and sounds to the deaf.

(5 D)

CXI.

Things escape the senses from the interruption of interposing bodies, as mountains, &c., which is remedied by signals, as beacons, fires, ringing of bells, guns, telegraphs, &c.; or, internal parts of animals by external signs, as the internal state of the body is known by the external appearance, as the tongue, the colour, the pulse, &c. (5 D)

CXII.

Things escape the senses from the object not striking the senses; as the vital spirit, which is remedied by the senses of other creatures, as the smell of a dog, the sight of a cat, owl, &c.; by the effect produced, as the state of the atmosphere by the barometer, the vital spirit by its effects, &c.

(5 E)

CXIII.

Things escape the senses because the percussion of the object is too great to be endured by the sense; as the form of the sun when looking directly at mid-day, which is remedied by the removal of the object to a distance, or the interposition of mediums, or the reflection instead of the direct action. (5 F)

CXIV.

Things escape the senses from the object striking the senses too faintly, either from the distance of the object, as the size of the celestial bodies, and the size and nature of all the celestial bodies, and the size and nature of all distant bodies; which is remedied by instruments, as by telescopes, by means whereof, as by boats or little ships of intelligence, a nearer commerce may be opened and carried on with the celestial bodies.

The imagination assists in the acquisition of knowledge, by conceiving the existence of existences not present to the senses.

(5 M)

CXX.

Imaginations are either of realities or of fictions.

Reality.

CXXI.

(5 N)

Imagination of realities is the conception of the existence of a real existence not present to the

senses.

CXXII.

(5 0)

When the impression is made by action on the senses, it is MEMORY.

CXXIII.

(5 P)

When the impression is made by communication, it is CONFfidence.

(5 Q)

CXXIV.

When the impression is made by reasoning, as to present existences from existences that are present to the senses, it is INVENTION.

CXXV.

(5 R)

When the impression is made, as to present existences, by the conception from known existences of the future existence of new existences, it is

FORESIGHT.

(5 S)