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26. To find the two Days on which the Sun is in the Zenith

or any given Place, &c.

255

27. To find where the Sun is vertical on a given day and
Hour....

ibid.

28. At a given 'Time of the Day in one Place, to find at the

same Instant those Places where the Sun is rising, set-

256

29. To find all those places within the Polar Circles, on which

the Sun begins to shine, &c......

257

30. To make (se of the Globes as a Tellurian

253

31. To rectify the Globe to the Latitude and liorizon of any

Place....

262

32. To rectily for the Sun's Place

ibid.

33. To rectify for the Zenith of ary

Place...

263

Of exposing the Globe to the Sun

ibid.

31. To observe the Sun's Altitude .....

266

35. To place the Globe, when exposed to the Sun, that it may

represent the natural positions of the Earth..

268

36. To find naturally the Sun's Declination..

270

37. To find naturally the Sun's Azimuth....

271

38. To shew where the sun will be twice on the same Azimuth

in the Morning, and twice in the Afternoon

272

39. To find the Hour by the Sun

273

Of Dialling:..

279

40. To construct an Horizontal Dial...

283

41. To delineate a South Dial .

286

42. To make an erect Dial

287

Of Navigation

291

43. Given the difference of Latitude, and difference of Longi-

tude, to find the Course and Distance sailed

297

44. Given the difference of Latitude and Course, to find the

difference of Longitude, and Distance sailed

ibid.

45. Given the difference of Latitude and Distance run, to

find the difference of Longitude, and Angle of the

Course

298

40. Given the difference of Longitude and Course, to find the

difference of Latitude, and Distance sailed

299

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