
(Read April 20:71. Enter LB.4.268) Yorke April 8th 1671. Mr Listers letter to Mr Old, about ye motion of juices in vegetables, and an English black. Yours of ye 4th instant came safe to my hands. This last month has been a busie time in my private concerns soe yt I have but a few things to returne you to what you have been pleased to commicate to me in relation to ye further discovery of ye motion of juices in vegetables. And I must acquaint you yt these notes are above 14? dayes old, for I have scarce busied my head or put my hand to any Expt of latter date. One or both ends of ye pith of a Willow pole sealed up wth hard wax, will yet freely bleed by ye warmth of ye Fire: this was tryed when ye last experiments I sent you were & I thinke, omitted. March 23d was ye greatest frost & snow we have had this winter in these parts about Yorke. Some twiggs & branches of ye very same willow Tree as formerly and likewise of many other Willow Trees taken off this morning March 23d when brought within ye aire of ye Fire would shew noe moisture at all; noe not when heated warme & often & long turned. March 24th ye same willow branches wch yesterday would not bleed & were thrown upon ye Grasse Spott all night did both they & all others new cut downe by ye Fire side freely shew moisture & bleed this morning upon ye breaking up of ye frost. Ash poles & branches this day nor yesterday would by ye fire be noe more moist than when I formerly tryed ym. The same morning March 23d a Twigg of Maple, wch had had ye top cut off ye 7 of February last past & wch than bledd, this day being quite taken of from ye Tree, & brought within ye aire of Fire, & held wth ye formerly- cut-end down wards, did not run at all at yt end, but held-on in yt posture it did run apace at ye other non-cutt end uppermost soe as to spring & trickle downe Note, yt this doth well agree wth my Expments made ye last yeare at Nottingham, where I observed wounds of some months standing to bleed apace at ye breaking up of very hard Frost. For first in these parts there hath been noe hard frost this yeare, not comparable to ye last yeare: Again those Nottingham Trees I wounded in ye Trunke & they stood against a brick wall & ye wounds were on ye side next it, & besides had horse-dung stopped in all of ym for some reasons, wch things did undoubtedly disfend ym much from ye aire & winds & keep ye wounds still green & open. Wheras ye topps of these Maple twiggs spoake of in ye last expt were exposed in an open hedge to ye aire & winds as alsoe ye 2 sycamores here at Yorke, mentioned in my former Letters, to have been
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Manuscript details
- Author
- Martin Lister
- Reference
- EL/L6/29
- Series
- EL
- Date
- 1722
- IIIF
-
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Cite as
Martin Lister, dated at Petworth, to Henry Oldenburg, 1722. From The Royal Society, EL/L6/29
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