1134 PLEADINGS, PRACTICE AND PROCESS AT LAW. [ART. 73.

necessary in said certificates to incorporate any tables of courses
and distances, but said certificates shall contain only a brief ex-
planation of the plats and of the tracts of land and objects shown
on the same, describing by a letter or device the point on the
plat where each tract begins, and describing by color, number,
&c., the lines on the plat which represent the boundaries of each
tract or parcel of land, and describing by letter or device the
manner and place where and in which all other objects are rep-
resented on said plats; and it shall not be necessary to describe
the location of any tract or object more than once in each of
said certificates, although a greater number of title papers may
be offered in evidence containing its lines; but each party shall
file with the surveyor, to be returned along with said certificate,
a list of the deeds, patents, or other conveyances or title papers
which he means to offer in evidence at the trial of the cause,
briefly describing the same by date, place of record or other means
of identification; and said surveyor shall return said lists along
with his certificates; and no title paper shall be offered in evi-
dence by either party unless such list shall have been so de-
livered by him to said surveyor, nor unless said paper shall appear
on said list; and if either party shall make any surveys or loca-
tions which the court, in its discretion, shall think unnecessary,
the party requiring the same shall pay the cost thereof; and any
party to any cause hereafter tried may give in evidence any
patent, deed or other paper which would be evidence in the cause,
if it shall be located in whole, or only such part thereof as may
be necessary to prove or illustrate the matters in controversy,
either by actual survey or by protraction as herein provided, if
said patent, deed or other paper shall be upon the aforesaid list
furnished to and returned by the surveyor; and in all actions of
trespass quare clausum fregit, where the alleged trespass consists
of excavations of coal, iron, ore or other mineral or material
under ground, and such excavations cannot be measured or located
on the plats by reason of the same having become inaccessible by
falls of earth or otherwise, or by the closing or partial closing of
the galleries, headings, rooms or other excavations constituting
or leading to such trespasses, then and in all such cases it shall be
lawful and proper to prove such trespasses by any evidence
otherwise competent and admissible, notwithstanding such tres-