120 LAWS OF MARYLAND. [CH. 84

of Maryland (1939 Edition), title "Clerks of Courts", sub-
title "Clerks of the Circuit Courts", as said section was en-
acted by Chapter 1016 of the Acts of 1945, be and it is here-
by repealed and re-enacted, with amendments, to read as fol-
lows:

72B. Such plats must be drawn accurately to scale and
may be made on a good quality of tracing linen or be blue
prints or blue or black line prints on linen; shall contain the
courses and distances of all the outline or perimeter of as
much of the whole tract, proposed to be sub-divided, as is
shown on the plat and on all roads, streets and avenues.
Where the alleys and lot lines shown on the plat are not
parallel with the roads, streets and avenues, the courses and
distances of such lines shall be put on the plat. The radii
and chords of all curved lines shall be shown on the plat
by courses and distances and their tangent points located
by the co-ordinates hereinafter defined. The plat shall show
a meridian line drawn through one of the corners of the out-
line or perimeter of the whole tract and another line drawn
at right angles to said meridian through the same point. The
meridian, so drawn, shall be either a true meridian or the
magnetic meridian of the date of the plat and so marked on
the plat. From the said meridian and right angle line all
the courses and distances and co-ordinates shown on the plat
shall be calculated. The co-ordinates shall be the distances
of a point from each of the two lines drawn through the cor-
ner of the outline, as above directed, measured on lines
parallel, with said meridian and said right angle North or
South, East or West of said corner, and these distances shall
be marked on the plat at the points where co-ordinates are
required by Sections 72A to 72D. The plat shall show
the co-ordinates for each corner of each avenue, road, or
street intersection and the tangent point of all curved
lines shown on said plat, and shall show accurately the di-
mensions of each lot. No distance on the plat shall be
marked, more or less, except on lines which begin or termin-
ate or bind on a marsh, stream or any body of water. The
plat shall show the position by co-ordinates of not less than
four markers set in convenient places on the sub-division
in such manner that from the position of one marker the
position of one other marker will be visible. These markers
shall be made of hard durable stone or of concrete three
feet of which shall be planted into the ground. From these
markers, commonly called "traverse points" all corners and
lines can be readily calculated and marked on the ground.
If the sub-division lies in an area where a traverse or co-or-
dinate system is already established and the traverse points