855 
mind purfues In forming it, 5 ; vague or 
ftridt, 9; difcurfive, 10; when it con¬ 
tains an imperative, it is pradtical, 16 ; 
defined, 17. 
Lambert’s Organon, 4. 
Leap in concluding (faltus), 29. 
Leibnitz contributed to bring univerfal Lo¬ 
gic into notice, 4. 
Locke did not treat on Logic, 4. 
Logic, capable of attaining a permanent 
Form, 2 ; will greatly facilitate the ftudy 
of th e Critical Philofophy, 3; has nothing 
to do with the matter of Knowledge, but 
only with the form, ib. as it only ar¬ 
ranges our thoughts, is purely regulative, 
ib. contains the abfolutely-neceflary laws 
of thinking, which are a priori, i. e. in¬ 
dependent of all experience, ib. is the 
■ groundwork of all other feiences, ib. Is a 
Canon for the ufe of Underftanding and 
Reafon, ib. it is neither a- Science of 
Speculative Reafon nor of Common Senfe, 
but is a Science of the laws of thinking 
in theabftradt, 4; entirely feparate from 
Philofophy, which concerns the matter 
of thought, ib. 
Logical Diftindtnefs, what, 11. 
Logical Efience of a thing, what, 1 r. 
Logical Neceffity of Knowledge, 9. 
Logical Origin of Conceptions, 19 ; Adis of 
Comparifon, Reflection, and Abftradt ion, 
ib. 
Logical Perfection of Knowledge, 4. 
Malebranche did not treat on Logic, 4. 
Marks of Knowledge, Internal, external, 
analytic, fynthetic, co ordinate, fubordi- 
nate, affirmative, negative, 10 ; impor¬ 
tant, unimportant, neceflary, accidental, 
primitive, derivative, 11. 
M athematicijin, it is his bufinefs to 
produce diftindl Conceptions, and that of 
the Philosopher to render given con¬ 
ceptions diftindt,-J2. 
Matter and Form of Conceptions, 19 ; of 
Judgments, ai ; of Disjundtive Judg¬ 
ments, 225 of Conclufions of Reafon, 25. 
Means of advancing the logical perfection 
of Knowledge, 29. 
Meditation, 31. 
Memory defined, 18. 
Method of Pure Univerfal Logic, 29. 
Mixed Rational Conclufions by Inveriion of 
the Propofitions, 26. 
Modality of Judgments, problematical, af- 
fertorical, and apodidtical, 23. 
Mode of treating Logic, 3. 
Modes of Conclufions of Underftanding, 24. 
Modus ponens and Modus tollens, 22. 
Nominal and Real Definitions, 30. 
Novmenon defined, 17. 
Objedt, rendered diftindt by a Jynthefs of 
its marks, 12. 
Objedt and End of Method, 29. 
Objedt of logical Refledtion, is the mere 
form of Judgment, 21. 
Obfcure reprefentation, fignifies that we are 
confcious of the whole but not of the 
parts, 5. 
Opinion is a holding for true that is neither 
objectively nor fubjedtively fufficient, 
22 ; it is not to be met with ill know- 
ledge a priori, confequently not in the 
Mathematics, nor in Metapbyfics, nor in 
Morals, but merely in empirical Know¬ 
ledge, ibid. 
Oppofition, a Conclufion of Underftanding, 
24, 
Panfophy, the extenfion of fpcculative and 
hiltorical knowledge without determinate- 
bounds, 8. 
Paralogil'ms, 2,9. 
l o g i d 
Peculiar charadter of Disjundtive Judg- 
ments, 22. 
Peculiar Difference of Categorical, Hypo¬ 
thetical, and Disjundtive, Conclufions of 
Reafon, 26. 
Peculiar nature of Conclufions of Under¬ 
ftanding, 24. 
Pedantry to be avoided, 8, 
Perception defined, 17. 
Perfuafion oppofed to convidtion, 13. 
Phenomenon defined, 17. 
Philology, a critical knowledge of litera¬ 
ture and languages, 8. 
Philofophy, the higheft maxim of Reafon, 
and the only fcience which can procure 
us complete inward fatisfadiion ; its high¬ 
eft problems are compriled in the fol¬ 
lowing queftions : 
1. What can I know ? 
2. What ought I to do ? 
3. What may I hope ? 
4. Wliat is man ? 
Plato, his obfervations, 7. 
Polyhiftory, hiltorical Knowledge without 
. determinate grounds, 8. 
Polymathy, unlimited fpeculation, 8, 
Polyfyllogiftical Ratiocinations, 28. 
Popular mode of treating Logic, 4. 
Popular ftyle, 8. 
Populates and Problems, 23. 
Pradtical Convidtion is the true moral belief 
of Reafon; and, although it never can 
be knowledge, it cannot be invalidated 
by any knowledge whatever, 13. 
Pradtical importance we can never forefee, 
but muft wait until it is afeertained, 8. 
PraBical Knowledge , the only unconditional 
end to which it can refer is Moiiality, 
which is the final end and i'cope of all our 
exertions, 16. 
Precifion, what, 11. 
Prejudices, what, 13 ; they arife chiefly 
from Imitation, Habit, and Inclination, ib. 
Preliminary Judgment, 13 ; neceflary to 
the ufe of Underftanding, 14. 
Principle of ConttadiBion, of fufficient rea¬ 
fon, and of excluded third, 9 ; of Cate¬ 
gorical Conclufions of Reafon, 26 ; of 
Hypothetical Conclufions of Reafon, 27; 
of Disjundtive Conclufions of Reafon, ib. 
Principles are immediately-certain Judg¬ 
ments a priori, 23. 
Private Horizon of Knowledge, 7. 
Probability implies a majority of ohjeBive 
reafons in favour of a thing, 15 ; it is 
fufceptible of degrees, and is only to be 
met with in experience, ibid. 
Pro-fyllogifms and Epi-fyllogifms, 28. 
Proving in a circle, 29 ; too much and too 
little, ibid. 
Pure and altered Converfion, 24. 
Pure and mixed Categorical Conclufions of 
Reafon, 26. 
Pure Logic confiders the Underftanding dif¬ 
tindt from the other faculties of the 
Mind, 4. 
Quantity of Knowledge intenfive and ex- 
tenfive, 6. 
Rational Certainty is divifible into ma¬ 
thematical and philosophical ; 
the former is intuitive, the latter difeur- 
five ; mathematical certainty is alfo 
termed evidence, becaufe intuitive know¬ 
ledge is clearer than difcurftve, though 
both include neceffity, 13. 
Rational Concluftons in general, 25. 
Reason fumilhes us with Ideas, 3 ; it is 
an adlive principle, that ought to take 
nothing upon credit, 14. 
Reciprocal Conceptions, 19. 
ReprefeiUation does not amount to Know¬ 
ledge, 5; Is a variety in a Unity, that ij„ 
an Eftedt refulting from the adlive and 
paffive Faculties of the Mind, 17. 
Right and Wrong , conformable to Dutyj 
contrary to Duty, 12. 
Rules for avoiding Error, 10 ; for Catego¬ 
rical Conclufions of Reafon, 26; for the 
firft figure of Categorical Conclufions, as 
the only regular one, ib. for forming 
and proving Definitions, 30. 
Scale of the value of Knowledge, 12. 
Scepticifm confifts in the maxim to confider 
all knowledge as uncertain, and thow the 
impoffibility of attaining certainty, 16. 
Scholar, the true, is free from Pedantry, 8. 
Scholaftic mode of treating Logic, 4 ; Per- 
fedtion, 8. 
Scruple is an oppofite ground to the holding 
for true, and which is only fubjedtively 
valid, 16. 
Senfation is the alteration that occurs when 
our Receptivity is aftedted, 17. 
Sense defined, 17; receives the matter of 
Knowledge, 3 ; is the power of Recep¬ 
tivity, 6 ; its influence upon the Un¬ 
derftanding while it is judging, 9. 
Simple and Compound Conclufions, 28. 
Socrates, his ignorance was glorious, 7. 
Sophifms, 29. 
Sorites, or Chain Syllogifms, 28. 
Sources of Knowledge, Sense and UN¬ 
DERSTANDING, 5. 
Space defined, 17. 
Subalternation, a Conclufion of Underftand¬ 
ing, 24. 
Subtilty, a fubjedtive perfedtion of Know¬ 
ledge, 9. 
Superior and Inferior Conceptions, 19. 
Table of the Elements of Knowledge, or 
Intuition, Conception, and Idea, 
18 ; of Judgments, 21. 
Tautological Propofitions, 23. 
Theorems, Corollaries, Lemmata, and Scho¬ 
lia, 24. 
Theoretical and Pradtical Pofitions, 23. 
Thinking alone does not amount to Know¬ 
ledge, 5; depends upon Conceptions, 
Judgments, and Conclufions, 5; toorient 
one’s felf in Thinking, 10. 
Thought is, properly fpeaking, merely the 
form of Knowledge, 3. 
Time defined, 17. 
Truth the chief perfedtion of Knowledge,. 
S ; how poffible, 9 } an objective pro¬ 
perty of Knowledge, 12. 
Understanding forms conceptions oF 
the matter furniffied by Senfe, 3 ; it is 
the power of Spontaneity, 6 j it 
luffers itfelf to be milled in judging by 
appearance, 9; defined, 17. 
Univerfal Logic impoffible prior to the great 
difeoveries of Immanuel Kant, 2. 
Univerfal material criterion of Truth, none 
fuch poffible, 8. 
Univerfal formal criteria of Truth are, the 
pofition of contradidtion, and thepofition 
of fufficient reafon, 9. 
Univerfal Principle of all Rational Conclu¬ 
fions, 25. 
Univerfal Rules for the Subordination of 
Conceptions, 19 ; of Logical Divifion, 30. 
Ule of Conceptions in the abftifdt and the 
concrete, 19. 
Ufe of Logic, 3, 
Weaknefs of Confcioufnefs, 5. 
Wellington, his defeat of the French aU 
Vittoria confidered logically, 5. 
What is Truth ? S-. 
Wider and Narrower Conceptions, 19. 
Wolff contributed to bring univerfal Logic; 
intg notice, a. 
LON- 
