taps, plug taps and bottoming taps; notes on gearing, change gears for screw cutting, simple geared lathe and compound geared lathe, sizing and cutting of gears, including diametrical pitch and circular pitch; cutting screw threads; machine screws by number, giving the number of tap, diameter of tap and size of drill for tapping; bolts and nuts; tapers and angles, showing taper in inches per foot, included angle in degrees and minutes, and angle with center line in degrees and minutes; speed of emery wheels, including those made from corundum and carborundum.

Notes for pattern shop practice include: notes for pattern making; the match plate, including the use of the molding machine; timber, showing the kinds used, and their preparation; patterns, both solid and built up; weights of materials and castings; the match or odd size; the molding board, sometimes called follow board.

LECTURE NOTES PREPARED FOR THE INDUSTRIAL SCHOOL IN BROCKTON. Notes for the Brockton school include: for the steam engineering course, notes on steel, and the different processes for its manufacture; coal and its composition; combustion; corrosion of boilers, external and internal, and how it may best be prevented; boiler scale, its causes and effect; scale prevention, fresh water; scale prevention, salt water; the steam turbine; the Corliss valve.

APPENDIX F.

SYSTEM OF ACCOUNTING.

The accompanying form of combined cash journal and ledger has been adopted for use in the independent industrial schools under the supervision of the commission.

APPENDIX G.

STATE LAWS ON INDUSTRIAL EDUCATION.

CONNECTICUT.

CHAPTER 250 OF THE PUBLIC ACTS OF 1907.

AN ACT CONCERNING THE ESTABLISHMENT OF FREE PUBLIC SCHOOLS FOR INSTRUCTION IN THE PRINCIPLES AND PRACTICE OF TRADES.

SECTION 1. Any town or school district may by vote of such town or district, establish and maintain a free public school for instruction in the principles and practice of such distinct trades as may, with the approval of the state board of education, be designated by the board of school visitors, town school committee, or board of education of such town, or the district committee of such district. Such school shall be open, under such rules as may be prescribed by said school officers, to all residents of this state; but no child under sixteen years of age shall be admitted to any such school who has not completed the studies of the eighth grade in the public schools of the town in which said school is located, or an equivalent course of study approved by said school officers. Said school officers shall make rules and regulations with reference to the management of said school, not inconsistent with the provisions of this act. The instructors in any such schools shall be experts in the trades respectively taught by them.

SEC. 2. Two or more towns may, by vote of each of said towns, unite for the purpose of forming a trade school district and establishing schools under the provisions of this act, and the school officers of the towns so united may make all arrangements, agreements, and regulations necessary to the organization and maintenance of such trade school district. The said school officers of each of the towns constituting such district shall appoint one of their number to be a member of the trade school committee of such district, and the committee so appointed shall be a joint committee on behalf of the several towns constituting the district. Each town shall be entitled to one vote in said committee. Every district organized under the provisions of this section shall continue for at least five years, but at the end of said period of five years any town may dissolve said district by withdrawal therefrom, by vote of such town: provided, that notice of the intention to so withdraw shall be given