12

  head vpon immersion in cold water. of stretching & shrinking of glasse vpon cold & heat moray Slingsby
  godderd Hook curators for wighing all bodys RH shewd the proportion of Lead to water
  RH suggested. 1 of pertrifying wood. 2 of softning & hardning it 3 of making it durable by boyling in tarr.
Ap. 20. 1664 RH shewed the Expt. of compressing spt. of wine by a small glasse pipe in the manner of a spring wch
  did soe far suceed tht there was a sensible compression of the Spt. mr. Boyle shewd an Expt wth the same glasse to make
  tadpoles liue in water vnder a degree of pressure wch. condensd the air to a 10 or 12th part -
Ap. 27. RH shewd the magdeburg Expt. wth two bottles he to bring in the account in writing
may 4. RH tryd the magd: Expt. orderd to present expts. of fulminans in steel balls. & to prouide puluis Fulminans -
  RH orderd to agree wth the Diuer. croon Ball & RH to cut off the skin of a dog. &c -
may. 11 RH shewd magdeburg Expt. propounded breaking glasse drops dipt in glew. And he read his discourse vpon them
  for wch. he had the thanks of the Society. desired to shew expt. therein mentiond about condensation & rarefaction -
  Brounker moray petty wilkins neale godderd Henshaw Hill oldenburg Hook curators of the Leaden diuing box
may 18. RH. fired Gunpowder in cylindricall iron box. Expt. of Diuer Reported by R moray. RH mentiond a
  way to soften Iron. tryd bird in condensd air. and broke glasse drop in Glew.
may 25. Gunpowder Expt. blowd. orderd to be tryd againe. transparent parchment mentiond.
  RH. made a mouse liue in air condensd into an 8th. part. whence a man may liue vnder water at 200 fathoms
Iune. 1. 64 Gunpowder cylinder tryd & broken. to be made stronger next day. magdeburg Expt. tryd.
  croon chokd & Reuiued chicken. Diuing expt. tryd by shortgraue in a tubb.
Iune 8. Gunpowder broke case againe to be tryd next day. breaking wood prosecuted. RH brought in
  his Relation of the Lighting at St. Iames's.
Iune 15. moray Ball Hook curators of magneticall variation by bond affirmed 1: 30' westward. RH affirmed the Loadstone
  weaker in winter then summer. more wood broke. Refracting Engine proposd.
Iune 22. RH promised spectacles for a Diuer. proposd expts. choking and reuiuing chicken Croon Instrument
  for falling bodys at mr. wilsons turret. Refracting instrument orderd.
Iune 29. more expts. of breaking wood.
Iuly 6. 1664 RH. experimented the velocity of a vibrating string and found that a string tuned to G. Sol
  RE. VT. moues 272. beats in a 2d of time. Sound propagated by the string seemd as
  quick as sight to be prosecuted. more wood broke. Capn. Taylor mentiond Hardned iron that
  would rust.
Iuly. 13. RH presented expt. of determining the velocity of sounding string & confirmed the former tryalls
  Expt. of measuring the velocity of falling bodys tryd. . The magneticall obseruations of the variation Related
  & RH orderd to bring in the History of the whole matter & apparatus. RH asserted he had seen a magnet
  Lift 150 times its own weight. Dugdale about Lignum fossill in Axeholm.
Iuly. 20. musicall sounds on a monochord tryd.
Aug. 3. Expt. of the velocity of falling bodys tryd. bodys fell 61 foot in 3 half seconds & 15''' or 16'''.
  expts. of firing Prince Ruperts powder & Puluis fulminans - RH to try the velocity of falling bodys in
  St. Paules or westminster Abby more Expt wth. a monochord. & of breaking wood.
Aug 10. RH to bring in a List of Expts. for the RS meetings
Aug 17 Engine for measuring refraction produced Dr. Godderds hygroscope. Zulichems Letter. of his new pendul[um]
  watch of the RS Experiments concerning the velocity of brasse wire. and about RH expt of falling bodys -
  RH reported that a Leaden ball fell. 15 1/2 foot in a 2d
Aug 24. expt. for finding the velocity of a bullet by the Instrument for falling bodys. RH reported
  some of his tryalls at the top of St. Paules. RH read a paper of his about petrifaction which
  were to be printed in micrographia. RH his Instrument for Discouering seconds by the Sun mentiond
Aug 31. Refraction of Water tryed . Zulichems Letter of his Instrument of falling bodys which was found
  not much differing from RH's inuented before. of campanis obseruation of Saturne. PR Powder
  tryd. Expts. of the velocity of Descending bodys in water.
Sep. 7. RH. Related the 1/2 an Inch higher at the top then at the bottom of Paules. Related the starrs 5 in orions
  belt Sep.17. Expts. at Paules Related. vibration of Penduls. grauity of bodys velocity of falling
  bodys. RH to prepare a weatherclock. sep.21. Powder Expts. repeated. Expts. of Balls sinking
  in water tryd. microscopicall Picture of wheal worme to be produced. Sep. 28. expt. of Descent of
  bodys prosecuted. to wch. the Instrument for falling bodys was vsed. the Parisions follow refractions -
oct . 5 Refraction of water found 41.35' to an inclination of 30o also SV. which was found in proportio
  to Distilld water as 952. to 1122. Charlton & Hook reported the velocity of a bullet shot
  wth. PR powder six score yards in 1/2 a second. Oct 12 Expts. of Descent of bodys in water
  and of Refractions. Sr. W Pettys Instrument for measuring the velocity of the wind Oct. 19. merrets cata
  logue of trades. Zulichems Letter 1 of the satellits shadow on fro Rome 2 of watches wth 2 springs -

Ref: CELL/RS/HF_014  © Centre for Editing Lives and Letters