...shore to shore, fixing your position on each occasion by a sextant angle between your starting place and your assistant's station, and throw the floats...that elapses before they severally arrive opposite him. Take an angle from the opposite shore to give the breadth of the river. To make the calculation...

...course. Sound at intervals from shore to shore, fixing your position on each occasion, by a sextant-angle between your starting-place and your assistant's station,...scale in square feet, and count the number of squares in the area of the section. Multiply this by the number of feet between you and the assistant, and...

...and your assistant's station, and throw the floats overboard, signalling to your assistant when yon do so, that he may note the interval that elapses...scale in square feet, and count the number of squares in the area of the section. Multiply this by the number of feet Ixstween you and the assistant, and...

...course. Sound at intervals from shore to shore, fixing your position on each occasion, by a sextant-angle between your starting-place and your assistant's station,...opposite shore, to give the breadth of the river. HINTS TO TRAVELLERS. To make the calculation approximately, protract the section of the river on a...