502 



INDIANA. 



INDUCTION-BALANCE. 



ficial results anticipated from the administra- 

 tion of such an officer, one is that it will have 

 a good effect in setting at rest existing troubles 

 between mine-owners and operatives. The 

 law requires that the officer shall be a resident 

 of the State, a practical miner of not less than 

 twelve years' experience, two of which shall 

 have been spent in digging and mining coal in 

 the State ; and he is not to be at the time of 

 his appointment pecuniarily interested in any 

 coal-mine within the State, directly or indi- 

 rectly. On entering upon his duties he is to 

 execute a bond of $10,000, to be filed with the 

 Secretary of State, and take an oath of office. 

 The Mine Inspector is to have his office in 

 some central part of the mining district, is to 

 be paid a fee of $5 for each semi-annual in- 

 spection of a mine, and is to have power to 

 enter, examine, and inspect coal-mines, ma- 

 chinery, etc., the owner or agent being re- 

 quired to furnish facilities for such inspection, 

 failure or refusal to do BO being declared a 

 misdemeanor punishable by a fine of $100. 

 The Mine Inspector is to devote his whole 

 time and attention to the duties of his office, 

 and to collect and make tabulated statements of 

 certain facts in relation to the yearly produc- 

 tion of coal, methods of operating mines, 

 amount of capital and number of men em- 

 ployed, and such other information as he may 

 deem necessary, together with his opinion in 

 regard to the condition of the mines as to 

 safety and ventilation, all of which is to be 

 set forth in an annual report to the Governor. 



The wheat crop of the State for 1879 was 

 computed at 55,000,000 bushels; of this it 

 was estimated that about 43,000,000 could be 

 exported, leaving the remainder for home con- 

 sumption. 



The number of hogs packed at various points 

 in the State from November 1st to March 1st, 

 for two seasons, was: 1878-79, 682,321 ; 1877- 

 '78, 496,025. The following statement shows 

 the result in detail for Indianapolis alone : 



The Supreme Court of the State has decided 

 that the 28th and 29th days of February must 

 be counted in legal and commercial affairs as 

 one day. The decision is in these words : 



It must be regarded as settled in this State that the 

 28th and 29th days of February in every bissextile 

 year must be computed and considered in law as one 

 day. It has been neld by this Court that the English 

 statute 21 Henry III. is hi force in this State. This 

 statute, speaking of the 29th day of February, in leap- 

 year, provides, " Computftur dies ille el dies proxime 

 prceceaens pro unico aie." (And that day as well as 

 the day next preceding shall be computed as one day.) 

 This English statute is recognized as a part of the law 

 governing this State. The service of the summons 

 was not sufficient in law to justify either the default 

 entered or the judgment rendered. 



In the case of the Chicago, Danville, and 

 Yincennes Eailroad Company, the Supreme 

 Court of the United States decided " that the 

 Court may, as condition of appointing receiver, 

 provide for claims for back pay, materials, etc., 

 and that when money which the Court may 

 apply for back dues is used for the betterments, 

 the Court may, in proper cases, provide for 

 such debts out of proceeds of sale to extent of 

 such diversion. Title to cars remains in con- 

 ditional vendor as between him and mortga- 

 gees." 



INDUCTION-BALANCE, HUGHES'S. By 

 arranging two primary coils of equal size near 

 each other, each with a secondary coil beside 

 it, the induction-current induced in the one 

 secondary coil by the passage of a current of 

 electricity through the adjacent primary coil 

 may be made to exactly neutralize and bal- 

 ance a similar current induced in the other sec- 

 ondary coil. An instrument of the most 

 delicate sensitiveness has been constructed 

 by Professor E. D. Hughes, the English elec- 

 trician, on this principle. A microphone is 

 placed in the primary circuit, and a telephonic 

 receiver is connected with the secondary coil. 

 To this instrument he gives the name of the 

 induction-balance. One of its modifications is 

 the sonometer, an instrument which promises 

 to be of considerable practical value. The 

 sonometer is constructed by placing two pri- 

 mary coils in a horizontal position at a distance 

 of forty centimetres apart. A secondary coil 

 midway between them is so arranged that it 

 can be moved to one side or the other along 

 a graduated bar divided into millimetres. The 

 primary coils have similar poles facing each 

 other, so that a secondary current induced in 

 the movable coil by one of them would take 

 the opposite direction from the induction-cur- 

 rent produced by the other, and in a certain 

 position of the secondary coil the two forces 

 would exactly counterbalance each other ; no 

 current would pass, and the telephone could 

 not be made to emit the slightest sound. When 

 the two primary currents are equal in inten- 

 sity, the neutral position for the secondary is 

 exactly half way between them. "When the 

 coil is slid the least distance to either side of 

 the neutral point, a sound is produced which 

 increases as the coil is pushed farther to the 





