¥e Lee 
[ sta] 
Harwich, See King’s Wells. 
Heat. See dir. 
Herfehel, Mr. his wonderful progrefs in the difcovery of double, triple, &e, ae perm. 
36. The far greater part of which are doubilefs fyftems of ftars fo near each other 
as probably to be fenfibly affected by their mutual gravitation, ibid. See Fixed Starsy 
Mars, Conffruction of ibe Heavens. 
Hoar-froft, why found upon grais, trees, &c. when there is ne appearance of lee upon — 
water, andthe thermometer is above the freezing point, p. 380, 
Humfrys, Lieut. See King’s Wells. 
Humor, See Air. 
Humphreys, Mr. of Norwich. See New Plani, 
Hutchins, Thomas, Efq. Has one of Sir Godfrey Copley’s medals affigned to him, 
pe Viil. 
Hutten, Charles, LL. D. See Quadrant. 
I, 
Jee. See Thermometer, Hoar-frof, Evaporation. 
K. . 
King’s Wells, Defcription of thofe at Sheernefs, Landguard-Fort, and Harwich, by 
Sir Thomas Hyde Page, Knt. p. 6. Some circumftances refpecting the garrifons of 
Sheernefs, &c. p. 7. Sir Thomas directed to confider how to remedy the want of 
water at thofe places, ibid. Situation in which he found Sheernefs, p. 8. Ditto of 
Landguard-Fort, ibid. Ditto of Harwich and its neighbourhood, p. g- Operations 
at the well in Fort Townfhend, Sheernefs, p. 1o—15. Which were much forwarded 
by the affiduity of Mr. Cole, Lieut. Humfrys, and Mr. Marthall, ibid. Time of 
beginning and finifhing the work, p.11. Method of lining the well with wood, to 
prevent the mud’s falling on the workmen from above, ibid. and the filtration of 
the falt-water through the fand, p. 12. Manner of ftopping out the. falt-water 
entirely, and fecuring the foundation of the works, p. 13. A piece of a tree dif- 
covered 300 feet from the top of the well, p. 14. The bottom of the well blown 
up, and the water rifes forty feet in the bottom of the well, p. 14. Quality of the 
water ibid. Operations at Landguard-Fort when begun and finifhed, p. 15. Im- 
probability of finding frefh-water there, which is difcovered by accident, ibid. And 
isfound in great quantities, but at the depth of low-water-mark becomes entirely 
falt, p. 16. Means ufed to remove this impediment, ibid. Conjecture concerning 
the caufe of the frefh-water, p. 17. Operations at Harwich when begun and finithed, 
p- 18. But little water there, and bad, ibid. A new well funk, and a plentiful 
fupply of frefh-water procured, p.1g. Explanation of the plates, ibid. 
Kirwan, Richard, Efq. See dir. 
3 : L. Landerbech, 
- —* oe 
