Report, Band 2Johns Hopkins Press, 1898 CONTENTS.--Vol. I (1897)--Vol. II (1898)--Vol. III (1899)--Vol. IV (1902)--Vol. V (1905)--Vol. VI (1906)--Vol. VII (1908)--Vol. VIII (1909)--Vol. IX (1911)--Vol. X (1918)--Vol. XI (1922)--Vol. XII (1928)--Vol. XIII (1937)--Vol. XIV (1941) |
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amount angles azimuth Baltimore county base beds blocks building stones Canal Carroll counties Cecil county character Chesapeake Bay Cockeysville color considerable Creek crushing crystalline cubes Delaware detailed distance east eastern Ellicott City errors exposure feldspar formations Frederick Frederick counties freezing furnished gabbro Garrett counties Geologist gneiss grains granite Harford Harford county Herman Howard county indicated joints land later latitude limestones marble Maryland Geological Survey material measured method miles minerals Mountain observations obtained Ohio opened operated Peach Bottom Plate points Port Deposit portion Potomac pounds present published quarries quartz railroad region represented Ridge river rock roofing slates sandstone scale Seneca serpentine sheet shore sketch specimens station strength structure surface Susquehanna telescope territory tests texture tion topographic traverse triangulation Triassic U. S. Coast U. S. Geological Survey valley Virginia Washington weathering western
Beliebte Passagen
Seite 344 - You must observe if you can, whether the river on which you plant doth spring out of mountains or out of lakes. If it be out of any lake, the passage to the other sea will be more easy, and [it] is like enough, that out of the same lake you shall find some spring which run[s] the contrary way towards the East India Sea...
Seite 386 - A Survey of the Northern Neck of Virginia, being the Lands belonging to the Rt. Honourable Thomas Lord Fairfax Baron Cameron, bounded by i within the Bay of C'hesapoyocke and between the Rivers Rappahannock and Potowmack: with the Courses of the Rivers Rappahannock and Potowmack in Virginia, as surveyed according to Order in the Years 1736 & 1737.
Seite 355 - I have sent you this Mappe of the Bay and Rivers, with an annexed Relation of the Countries and Nations that inhabit them, as you may see at large. Also two barrels of stones, and such as I take to be good Iron ore at the least; so devided, as by their notes you may see in what places I found them.
Seite 392 - A Map of Pensilvania, New-Jersey, New York, And the Three Delaware Counties: By Lewis Evans. MDCCXLIX.
Seite 355 - Relation." which was entered at Stationer's Hall, London, August 13, 1608, under the following title, which differs from the printed one, as it mentions Nelson's name: "A true relation of such occurrences and accidents of note as have happened in Virginia synce the first planting of that Colonye which is nowe resident in the south parte of Virginia till master Nelson's comminge away from them, etc.
Seite 378 - Virginia and Maryland as it is planted and inhabited this present year 1670 surveyed and exactly drawne by the only labour and endeavour of Augustin Herrman, Bohemiensis.
Seite 292 - The effect of the error of inclination on the circle reading for any direction varies as the tangent of the altitude of the object observed. If the inclination is small, as it may always be by proper adjustment, its effect will be negligible in most cases. But if the objects differ much in altitude, as in azimuth work, the inclination of the axis must be carefully measured with the striding level, so that the proper correction can be applied. The following formula includes the corrections to the...
Seite 303 - A geometric condition of such figure is that the sums of the logarithmic sines of the angles about the base, taken in one direction, must equal the similar sums taken in the other direction, ie the product of the sines must be equal. In the present case, log.
Seite 393 - The last serves as plate No. 32 in Jefferys' " A General topography of North America and the West Indies," London, 1768, and as No. 18 in his "American Atlas " of 1775. About the same time (1776) I. Pownall, Governor of Pennsylvania, published in London a " General Map of the British Middle Colonies," which was engraved by T. Almon. The work, because of Pownall's position and his previous explorations, became an authority which was reproduced or acknowledged as a basis in most of the maps published...
Seite 62 - A few words only on the subject are here necessary. It is doubtful if in any but the most extreme cases it is necessary to continue this line of investigation. The results thus far obtained are sufficient for us to formulate general rules, and the average results obtained are so vastly in excess of all ordinary requirements that they may safely be ignored. A stone so weak as to be likely to crush in the walls of a building, or even in a window stool, cap or pillar, bears so visible marks of its unfitness...