ERRATA.

Owing to a mistake, for which the Committee on Publication are not responsible, a large part of this Report went through the press without the proof-sheets having been submitted to them. In consequence, errata have occurred. The following are the more important:

Page 3, fourth line from the bottom, for "and,” read “from.”

Page 5, third line from the bottom, for "provision," read “institution." Page 10, third line from the bottom, for "cholics," read "ecbolics." Page 48, seventh line from the top, for "diavetice," read "diuretics." Page 48, fourteenth line from the bottom, for "mercurial,” read “mercurials.” Page 48, eleventh line from the bottom, for "toraxicum," read "taraxicum." Page 48, tenth line from the bottom, for "visceras," read "visceral." The office has no type for the characters used in apothecaries' weights. The proscription at the bottom of the page is:

Muriate of ammonia, one-half dram;
Fluid extract of taraxicum;

Aqua Pura, a. a. one ounce and a half.

Page 50, ninth line from the top, for "torraxicum," read "taraxicum." Page 50, eleventh line from the bottom, for "f. zj.," read "one fluid dram.” Page 51, tenth line from the bottom, for "diaretics," read "diuretics." Page 51, ninth line from the bottom, for "diaretic," read "diuretic." Page 52, second line from the top, for "tanum," read "tannin," and for "rino," read "kino."

Page 60, strike out eleventh line from the bottom.

Page 62, seventh line from the top, for "Horpital," read “Hospital.”
Page 65, ninth line from the top, for "epphysis," read "epiphysis."
Page 66, bottom line, for "Brodris'," read "Brodie's."

Page 69, tenth line from the bottom, for "atrophird," read "atrophied."
Page 72, second line from the top, for "acronium," read "acromion."
Page 72, tenth line from the bottom, for "heats," read "heals."

No. 16.

LEGISLATURE, 1859.

REPORT of the Muskegon Improvement Commissioners.

To the Hon. the Legislature of the State of Michigan:

In obedience to a resolution of the House of Representatives of 14th inst., the undersigned commissioners, appointed under an act entitled "an act for the improvement of navigation over the sand-flats of Muskegon river," appropriating the sum of fifty thousand dollars therefor, from the internal improvement fund, approved Feb. 17th, 1857, respectfully submit the following report of their acts and doings in relation to said improvement :

As early as practicable in the spring of 1857, the commissioners secured the services of J. Almy, Esq., of Grand Rapids, as engineer for making all necessary surveys, plans, plats, estimates and specifications for the improvement contemplated in said act, and immediately after the completion thereof, caused notices to be published for six successive weeks in newspapers published in the counties of Ottawa, Newaygo and Kent for proposals for said work. Two bids only were received therefor-one from John A.

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Brooks, Esq., of Newaygo, Michigan, and one from Messrs. Derby & Winch, of Chicago, Illinois.

Mr. Brooks proposed to do all the work named in the plans and specifications at the estimate of the engineer, being $43,201 20, and also so much more as would clear all obstructions between the mouth of Maple river and the south channel, a distance of about four miles, so as to make a good steam-boat channel, for the balance of the appropriation, after paying the services of commissioners, engineer and necessary superintendence.

Messrs. Derby & Winch proposed to furnish and drive the round piles at $5 each, sheet-piling at $25 per M. ft., board measure, the iron bolts at 12 cents per lb., remov ing stumps and snags at 4 cents per sqr. ft., dredging, 75 cents per cubic yard, making, as ccmputed according to the plans and specifications of the engineer, $97,875 80 for the same work which Mr. Brooks proposed to do for $43,201 20, being $54,674 60 less than the proposal of Messrs. Derby & Winch.

The commissioners, being required to contract for all works necessary "for the purpose of navigation over and across the sand-flats, at a price not exceeding the sum by this act appropriated," (see sec. 5,) and Mr. Brooks being the lowest and the best bidder, the contract was awarded to him, and closed on the 19th day of August, 1857.

Said contract required the work to be commenced on or before the 20th September next following, and to be finished on or before the 15th November, 1858, according to the plans and specifications made by the engineer and approved by the commissioners.

Mr. Sael Wood, of the city of Grand Rapids, and Aaron Swain, of Newaygo county, became sureties in the sum of ten thousand dollars for the performance of contract, though no such sureties are required by the law, as no part of said sum appropriated is to be paid until the work is all completed.