priated for 1900.

How to be paid.

Proviso.

nineteen hundred; and the Auditor General is hereby $20,000 approauthorized to draw his orders on the State Treasury for such portions of these amounts as may be required, from time to time, from money in the treasury not otherwise appropriated, upon vouchers signed by two members of the commission; but it is hereby provided that these expenditures shall not be in excess of the amounts expended upon the same work by the United States Geological Survey from its own funds. The commission shall report to the Governor each year. Commission to reFor the purpose of making the surveys hereinbefore provided for, it shall be lawful for the persons employed in making the same to enter upon all lands within the boundaries of this State, but this act shall not be construed as authorizing any unnecessary interference with private rights.

Section 3. This act shall be in effect immediately upon its passage.

Approved--The 28th day of April, A. D. 1899.
WILLIAM A. STONE.

The foregoing is a true and correct copy of the act of the General Assembly No. 78.

W. W. GRIEST,

Secretary of the Commonwealth.

port each year.

Persons employed

shall have right of

entry on lands.

Act to take effect.

AGREEMENT

BETWEEN THE TOPOGRAPHICAL AND GEOLOGICAL SURVEY COMMISSION OF THE STATE OF PENNSYLVANIA AND THE DIRECTOR OF THE UNITED STATES GEOLOGICAL SURVEY, FOR THE COOPERATIVE TOPOGRAPHIC AND GEOLOGIC SURVEY OF THE STATE.

1. The preparation of the maps shall be under the supervision of the Director of the United States Geological Survey, who shall determine the methods of survey and map construction, in accordance with act of Assembly of the State of Pennsylvania, entitled "An act to authorize the topographic and geologic survey of the State in co-operation with the United States Geological Survey," approved April 28, 1899.

2. The order in which in point of priority different parts of the State shall be surveyed shall be agreed upon in detail between said Commission and said Director.

3. The work shall be based upon the triangulation of the United States Coast and Geodetic Survey, and, wherever this triangulation is deficient, it shall be supplemented by said co-operative survey.

4. The survey shall be executed in a manner sufficiently elaborate to prepare a topographic map upon the scale of 1:62,500 exhibiting the hydrography, hysography and public culture; said survey and map shall accurately show all township and county boundary lines (as established by the State laws at the time of their completion), and extensive wooded areas in this State as existing on the ground at the time of the execution of these surveys; the location of all roads, railroads, streams, canals, lakes and rivers, and shall show by contour lines the elevation and depression of the surface of the country, also on geologic maps and the location of the coal, oil, natural gas, clay-bearing and other geological formations. The said topographic maps shall be similar to the sheets already completed in this State, and the form of the final publications of the geological maps shall be the same as the Geologic Atlas of the United States Geological Survey.

The preliminary field maps shall be on such a scale as said Director shall select to secure accuracy in the construction of the final map.

5. It is understood and agreed upon that the geological work shall follow the topographic survey as closely as consistent with economy and in accordance with modern scientific methods. The time of beginning this work to be agreed upon between the State

Survey Commission of Pennsylvania and the United States Geological Survey.

6. The hypsography shall be shown by contour lines with vertical intervals of 20 feet, and the heights of important points shall be determined and marked upon fixed and permanent bench marks in important and prominent places throughout the counties; also, correct meridian points shall be located at each county seat and records furnished to the said Commission.

7. For convenience, the United States Geological Survey shall, during the progress of the field work, pay the salaries of the persons employed therein, while the traveling, subsistence and field expenses shall be paid for the same time by the State. For office work on the map the salaries shall be divided between the two agreeing parties in such a way as to equalize all expenses, provided that the total cost to the State of Pennsylvania of the field and office work and expense of said Commission for the year 1899 and 1900 shall not be more than forty thousand dollars ($40,000), and, provided that the United States Geological Survey shall expend an equal amount.

8. During the progress of the work free access to the field sheets and records of the topographers and draughtsmen shall be afforded the State Commissioners for examination and criticism; and should they deem that the work is not being executed in accordance with this agreement, then the said Commissioners may, on formal notice, terminate this agreement.

9. The resulting maps shall fully recognize the co-operation of the State of Pennsylvania.

10. As the work is completed, the State Commissioners shall be furnished by the United States Geological Survey with photographic copies of the manuscript sheets; and, when the engraving, which is to be done at the cost of the United States Geological Survey, is completed, and at all times thereafter, when desired, the said Commission shall be furnished by the said Survey with transfers at cost of printing from the copper plates of the photographic sheets for use in printing editions of said maps. Washington, D. C., July 12, 1899.

Department of the Interior, United States Geological Survey, Washington, D. C., January 23, 1900.

Hon. G. W. McNees, Chairman State Survey Commission, Kittanning, Pennsylvania:

Dear Sir: At the conference held in this office by the members of your Commission and myself to plan provisionally for the areas on which work should be done during the season of 1900, in accordance with general plans arranged between yourselves and the Director of this Survey, the following was verbally agreed upon:

PRIMARY TRIANGULATION.

Two parties to be placed in the field for the season. The first to connect existing belts of triangulation between Indiana and Bedford counties across Cambria county. Afterwards, to extend this triangulation northeastward through Blair towards Centre county. The second to connect existing triangulation in Beaver and Westmoreland counties, across Allegheny county; also, to extend triangu lation in Washington and Greene counties.

TOPOGRAPHIC SURVEYING.

So much of the following atlas sheets to be mapped as the length of the field season and the funds available will permit; namely, Pennsylvania portion of Belair and Morgantown sheets in York and Fayette counties. Also, Brownsville, Connellsville, Tioga, Mercersburg, Chambersburg, Hollidaysburg, Macungie, Heidelberg, Coalbrook, Latrobe, Kittanning, Indiana, Dayton, Saltsburg and Waynesburg atlas sheets. Total area estimated, three thousand four hundred and eighty (3,480) square miles. It is probable that additional areas may be possible of survey during the season besides those above named.

If you find the above statement to be correct I should be glad to . have your approval of it.

Approved-January 26, 1900.

G. W. McNEES,

Very sincerely,

H. M. WILSON,

Geographer.

Chairman.

APPENDIX B.

STATEMENT OF APPROXIMATE COST AND AREAS OF THE SEPARATE TOPOGRAPHIC SHEETS MAPPED IN PENNSYLVANIA BETWEEN 1888 AND 1901, INCLUSIVE, BY THE UNITED STATES GEOLOGICAL SURVEY.

In 1888 parts of atlas sheets lying along the common boundary line of Pennsylvania and New Jersey were surveyed and mapped in connection with the co-operative survey of New Jersey.

Including the cost of office work this cost $6.90 per square mile, making the cost of the mapping in Pennsylvania in connection with the New Jersey work $4,893.48.

In addition to the above, there were mapped in Pennsylvania in 1888 the following atlas sheets lying wholly within the State:

Which, at the rate of $6.90 per square mile, cost $3,146.40. Hence, the total expenditure in 1888 was about $8,039.88.