§ 919-a. Block indices in the office of the county clerk in the county
of Richmond. a. The county clerk of the county of Richmond shall
continue to index under the proper block numbers all instruments now
required by law to be recorded in the books of notices of lis pendens.
Such block index of notice of lis pendens shall be entitled "the block
index of notice of lis pendens" and shall be ruled for entering therein
the date of filing, the nature of the action, the nature of the
instrument, the court and index number, the first named defendant, the
first named plaintiff, the lot number or street address, if any, the
microfilm number and the proceedings had.

b. Such county clerk shall also continue to index under the proper
block numbers all statutory notices of liens or claims on land other
than lis pendens which may be filed or recorded in his office, which
index shall be entitled "the block index of liens" and shall be ruled
for entering therein the date of filing, the nature of the instrument,
the owner of the premises affected by the notice, the name and address
of the lienor by whom the claim is made, the amount, the lot number or
street address, if any, and the proceeding had.

c. On and after July first, nineteen hundred eighty-one, the use of
land maps in the office of the county clerk of the county of Richmond
shall be discontinued, and the land maps previously in use shall remain
on file for the purpose of reference. On and after such date, the tax
map for the borough of Staten Island shall be substituted for the land
map theretofore in use for the county of Richmond, and reference shall
be had to such tax map and to the block numbers designated thereon for
the purpose of indexing instruments required to be indexed in the block
index of notice of lis pendens or in the block index of liens. Such tax
map shall be conclusive as to the location of block boundaries and block
number designations. Such tax map may be referred to as the land map for
the county of Richmond.

d. Unless existing land and tax blocks are presently identical, on and
after July first, nineteen hundred eighty-one, the indices of all blocks
theretofore existing in the block index of notice of lis pendens and in
the block index of liens shall be closed except for the purpose of
completing the indexing of instruments filed prior to such date. New
block indices shall thereupon be opened for the block index of notice of
lis pendens and for the block index of liens, which new indices shall be
numbered to conform with the block numbers designated on the tax map of
the borough of Staten Island and shall thenceforth be used for all
entries relating to land in such blocks. The date of closing shall be
entered at the end of each block index so closed and a reference shall
be made to the block number of the corresponding block in the new block
index. All such new block indices shall be endorsed on the covers
thereof so as to show the date of the opening thereof.

e. Whenever the boundaries of any block on the tax map shall
thereafter be changed or altered and renumbered according to law, the
block indices of notice of lis pendens and of liens of such block
theretofore existing comprising the land in the changed or altered block
so renumbered as aforesaid shall, except for the purpose of completing
the indexing of instruments filed prior to such change or alteration and
renumbering be closed and discontinued and new block indices of notice
of lis pendens and of liens shall be opened for every such renumbered
block, which new index shall thenceforth be used for all entries
relating to land in such block. The date of closing shall be entered at
the end of each block index so closed and a reference shall be made to
the number of every new, changed or altered block to be used in place
thereof. The date of opening shall be entered at the beginning of every
new block index, with a reference to the number of every block before in
use for the land contained in such new block.

f. Every instrument presented to the county clerk of the county of
Richmond for filing and required to be indexed in the block index of
notice of lis pendens or in the block index of liens in order to entitle
the same to be filed shall have endorsed thereon the number of every
block on the current tax map in which the land affected by such
instrument is situate.

g. Such county clerk, so long as he deems it expedient, may prepare
alphabetical indices of the parties to the instruments mentioned in this
section, or to any of them, filed in his office, and of the owners of
land against which liens have been filed and of judgment debtors whose
names appear on record. The particular form of such alphabetical indices
shall be as such county clerk shall determine, and shall cover such
periods and be brought down to such dates as he shall direct in respect
to his own office.

h. Whenever any instrument entitled to be filed and indexed under the
provisions of this section shall be presented for record, there shall
forthwith be endorsed thereon the date, hour and minute of its receipt
and the same shall be entered in the proper index under the proper block
number thereof in accordance with the items set forth in subdivision a
or b of this section.

i. The entries made in the block indices of notice of lis pendens and
of liens in conformity with the requirements of this section shall for
the purpose of notice be deemed and taken to be a part of the record of
the instrument to which such entries respectively refer, and shall be
notice to subsequent purchasers or incumbrancers to the same extent and
with like effect as the filing of such instruments in the office of such
county clerk now is or may be notice.

j. In cases where any instrument shall have been filed with an
erroneous designation, such county clerk on presentation of proper proof
thereof shall enter such instrument in the proper index under the proper
block number of every block, the designation of which shall have been
erroneously stated. He shall at the same time make a note of such entry
and of the date thereof in every place in which such instrument may have
been erroneously indexed, opposite the entry thereof, and also upon the
instrument itself, if the same be in his possession or produced to him
for the purpose, and the record of such instrument shall be constructive
notice as to the property in any block not duly designated at the time
of such filing only from the time when the same shall be properly
indexed.