The gentlemans recreation in two parts : the first being an encyclopedy of the arts and sciences ... the second part treats of horsmanship, hawking, hunting, fowling, fishing, and agriculture : with a short treatise of cock-fighting ... : all which are collected from the most authentick authors, and the many gross errors therein corrected, with great enlargements ... : and for the better explanation thereof, great variety of useful sculptures, as nets, traps, engines, &c. are added for the taking of beasts, fowl and fish : not hitherto published by any : the whole illustrated with about an hundred ornamental and useful sculptures engraven in copper, relating to the several subjects.

To find the Heighth of any Steeple that you cannot ap∣proach to Measure the distance, because of Water, or other Obstructions.

THis is done by two Observations; First stand, and observe the Heighth, and you'l find the Thread fall on 35 Parts of right Shadow; and because you cannot measure to the Steepl••, suppose the distance 90 Yards; then say, as 50 the whole Parts of right Shadow is to 35 Parts cut by the Thread; so is 40 Yards the supposed distance to 28 the supposed Heighth.

Then going a little farther in a Streight Line from the Steeple observed, you'l find the Thread to fall upon 33 Parts of right Shadow; then say as 33 Parts cut by the Thread is to the

whole Scale 50, so is 28, the supposed Heighth to 42 Yards 1 Foot, 3 Inches, the supposed dist∣ance of the Second Station, viz. 2 Yards, 1 Foot, 3 Inches.

But in measuring the Sationary Distance, you'l find it to be only 2 Yards, 3 Inches; then say as 2 Yards 1 Foot 3 Inches the supposed distance is to 2 Yards 3 Inches the true one, so is 28 Yards the supposed Heighth to 44 Yards, 4 Inches the true one. Then you may by this find the true [ 10] distance to the Foot of the Steeple, by saying, as 28 Yards, the supposed Heighth is to 24 Yards 4 Inches the true one, so is 42 Yards, 1 Foot, 3 Inches the supposed distance from the second Station, to 36 Yards, 1 Foot 7 Inches the true distance from the second Station to the Foot of the Steeple; and for the distance of the first Station taken away, the difference of the two Stations 2 Yards, 3 Inches, and the remainder will be the distance of the first Station to the Steeple.

If the Thread fall upon the Parts of contrary Shadow, observe only the Rules before laid down.

Note, when you are to find a distance, the Heighth given, or supposed, you are to use the proportion of contrary Shadow in right, and right in contrary; as in the last example in right Sha∣dow, that is, as the parts cut is to the whole Scale, which is the proportion of contrary Shadow, and in contrary Shadow as the whole Scale is to the parts cut.

Note also, that in taking the Heights you are to add always the Heighth of your Eye from the Ground.