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[[pre-printed]] H [[/pre-printed]]
Hardness in bodies, what is it, is it Cohesion, &c. Q.18. p.2 
Heat retained in Matter. how does the Agents Act then Q.21.p.2.
---increases a body's bulk & weight. p.4. 
Hills, from the top of, Refraction greatest.p.10. 
H's Principles of Philosophy. p.10.
Heathens, worshipped the power that keep together the earth and moon under the [[strike through]]          Name of a [[/strike through]] emblem of a [[underline]] Tether [[/underline]].
Hairs, cross ones, fixed to a Telescope.p.42. 
Heat make both the Barometer & Thermometer rise.p.56.
---gives Magnetism.p.68.
-- Not always the same in the same Latitude.p.60.
---of the sun, Heb. thereof.p.64.
Howling, Heb, thereof. p.66
Heart, moved by warm-blood.p.94
Hasselquist [[parentheses]] Dr. [[/parentheses]] his prescriptions, p.21.
Harrison's Watch for the Longitude. p.117,84.
Hutchinsonian controversy, Gents Mag, Vol. 22. for 1752 p. 168, 205, 259, [[insert arrow]] 316, 354, [[/insert arrow]] 415, 458, 463, 549, 521, 550, 606. Vol. 23. for 1753. p. 183, & 223. 410

Hebrew, Queries & difficulties in that Lang. Gents Mag. for 1753. p. 410.
Hadley's a demonstration of his Speculum & Quadrant in taking of Altitudes. p. 79
Heart, curious phenomenon of the blood in it. p. 144.
Heat, the cause of different states of the air - p. 153
-----, expands substances, 4. 92. 140, 155-7.
-----, different to boil the same liquor at diff. heights of Barom. 156
-----, great in England. Philos. Trans. vol. 50. p. 428. 
-----, requisite to boil several liquors, smelt metals - p. 156.[[strikethrough]]7[[/strikethrough]]
-----, not the [[underlined]] principal [[/underlined]] cause of evaporation. p. 160.
-----, an extradionary degree of it borne by a girl & other animals p. 318.
Hebrew terms. p. 64.
Hooke (Dr.) his curious wheel barometer, Gent's Mag. for June, 1765, p.272.
Hales (Dr.) his sea-gage for measuring unfathomable depths, Gent's Mag. for May 1754 p. 215. Philos. Trans. Vol. VI. Part ii. p. 163 of Martyn's Abridgmt.
Heat, greatest without the tropics, & why. Vol.II.  p.18-21.
Height of a cloud measured by one person Vol. II. p. 59.
----- of Hills at the Cape and St. Helena. Do. p. 62.
Head-Ach, to cure, Vol. II. p. 16.
Heat, its effect upon animal bodies. Vol. I. p. 255.
Hygrometer made of Hair. Vol. II. p. 87, 88, 105.
Herschel (Dr.) discovery of a 7th. Satellite of h II. 107.
Heat, at St. Lucie------ II. 109.
Hemlock, cures the Kinkcough. p. 35.