DOI Seite / Zitierlink:
https://doi.org/10.11588/diglit.18826#0118
LECT, II.] ON PERSPECTIVE. 81
As the whole procefs of practical perfpedlive is
intimately connected with the foregoing lift of plates,
it is proper to requeft the particular attention of the
ftudent to them; efpecially, as he is aflured, that
they contain nothing fuperfluous, or that may be
difpenfed with, but are inferted with defign, that
he may eafily carry in his memory the rules they ex-
emplify. It is neceffary to be explicit on this fub-
je£t, becaufe it is very uncommon to treat this fci-
ence fo concifely in regard to the number of plates;
but there is much reafon to imagine that multiplied
examples, and too numerous plates, have frequently
prevented that attention from being beftowed on it,
(becaufe feemingly attended with difficulty) which
the fcience deferves: whereas, in facl, its principal
rules are by no means either difficult or complex;
and the trouble connected with any part of it arifes
rather from the nature of certain objects to which it
is applied, and from the inventions of ornamental
decorations, whofe compolition is intricate. Now
as the members of any part of a building are but
divifions or portions of a certain extent, it is clear,
that, if we are able to reprefent that extent, and to
divide it into fuch portions, we are alfo able to treat
whatever thofe portions may contain: and thus the
ufe of perfpeclive appears moil evidently in thofe ar-
ticles, whofe juft reprefentation is naturally difficult,
and v/ithout this affiftance impoffible.
It will be extremely eafy for the ftudent to mul-
tiply examples fimilar to thofe here offered him; and
indeed it is advifeable that he mould varv and di-
verfify
As the whole procefs of practical perfpedlive is
intimately connected with the foregoing lift of plates,
it is proper to requeft the particular attention of the
ftudent to them; efpecially, as he is aflured, that
they contain nothing fuperfluous, or that may be
difpenfed with, but are inferted with defign, that
he may eafily carry in his memory the rules they ex-
emplify. It is neceffary to be explicit on this fub-
je£t, becaufe it is very uncommon to treat this fci-
ence fo concifely in regard to the number of plates;
but there is much reafon to imagine that multiplied
examples, and too numerous plates, have frequently
prevented that attention from being beftowed on it,
(becaufe feemingly attended with difficulty) which
the fcience deferves: whereas, in facl, its principal
rules are by no means either difficult or complex;
and the trouble connected with any part of it arifes
rather from the nature of certain objects to which it
is applied, and from the inventions of ornamental
decorations, whofe compolition is intricate. Now
as the members of any part of a building are but
divifions or portions of a certain extent, it is clear,
that, if we are able to reprefent that extent, and to
divide it into fuch portions, we are alfo able to treat
whatever thofe portions may contain: and thus the
ufe of perfpeclive appears moil evidently in thofe ar-
ticles, whofe juft reprefentation is naturally difficult,
and v/ithout this affiftance impoffible.
It will be extremely eafy for the ftudent to mul-
tiply examples fimilar to thofe here offered him; and
indeed it is advifeable that he mould varv and di-
verfify