Selected quad for the lemma: day_n

Word A	Word B	Word C	Word D	Occurrence	Frequency Band	MI	MI Band	Prominent
day_n	fair_a	night_n	rain_n	5,430	5	10.9395	5	false

Text snippets containing the quad

ID	Title	Author	Corrected Date of Publication (TCP Date of Publication)	STC	Words	Pages
A60281	The hydrostaticks, or, The weight, force, and pressure of fluid bodies, made evident by physical, and sensible experiments together vvith some miscellany observations, the last whereof is a short history of coal, and of all the common, and proper accidents thereof, a subject never treated of before / by G.S.	Sinclair, George, d. 1696.	1672 (1672)	Wing S3854; ESTC R38925	208,492	331

that Decemb. 13. 1669 one Doctor Beal found the Mercury in the Baroscope never to be so high as it was then That same very day I found the hight of it 29 inches and nine ten parts which I never observed before And though the day here was dark and the Heavens covered with Clouds yet no rain for many dayes followed but much dryness and fair weather On Saturday night March 26 1670 I found the altitude no more than 27 and nine ten parts This night was exceeding windy with a great rain On February 1 1671. I found the altitude 30 inches and the Heavens most clear But in the most part of May following I have found the hight but 27 inches and five ten parts in which time there was abundance of rain OBSERVATION XIV NOvember 7. 1670. I made exact trial with the Magnetick Needle for knowing the variation and I found it vary from the North three degrees and a half towards the West Hevelius writes from Dantzick to the Royal Society at London Iuly 5. 1670 that it varies with him seven degrees twenty minuts west OBSERVATION XV. DEcember 17. 1669 I observed with a large Quadrant half 9 a clock at night the formost Guard-star when it was in the Meridian and lowest to have 41 degrees 22 minuts of altitude And on Ianuary 7. 1670 at 7 a clock in the morning I found it when it was in the Meridian and highest to have 70 degrees 27 minuts Hence I conclude the elevation of the Pole here to be 55 degrees 54 minuts 30 seconds and consequently as much at Edinburgh because both the places are upon one and the same Parallel OBSERVATION XVI FOr finding the true Meridian follow this method In some convenient place fix two Wyre strings with weights at them that they may hang perpendicular Then in the night time observe when the fourth star of the Plough begins to come near to the lowest part of the Meridian at which time you will find the Polar star highest Then so order the two strings by moving them hither and thither till both of them cover both the said Stars then shall they in that position give you the true South and North. This observation is the product of the seventh OBSERVATION XVII THere fell out in Mid and East-Lothian on Thursday May 11 1671 in the afternoon a considerable shour of hail with thunder and rain It came from the South-west with a great blast of wind and ran alongs from Picts-land-hills North-east towards the Sea coast The hail were big in several places as Musquet Ball and many of them rather oval than round Some persons suffered great loss of their young Pease others of their Glass Windows Eight or ten days before there was a considerable heat and dry VVeather For 20 dayes after cold Easterly winds with rain every day but especially in the end of the Moneth extraordinary rain and mist. This is so much the more to be observed because in this Countrey seldom such extraordinary hail falls out This year the Agues and Trembling Fevers have been most frequent and to many deadly OBSERVATION XVIII I Did hear lately of a curious Experiment in Germany made by a Person of note which I shall briefly in this Observation let the Reader understand And though I have heard since that it is now published in Print yet I hope it will not be impertinent to mention it here especially for their cause who cannot conveniently come to the knowledge of such things And for this reason also that I may explicat the Phenomena thereof from the foregoing doctrine and demonstrat particularly the true cause of that admirable effect that 's seen in it which I desiderat in the publisher The Auctor then takes two Vessels of Brass each one of them in form of half a sphere of a pretty large size Nothing can more fitly represent them for form and quantity than two Bee-skeps Only each of them hath a strong Ring of Brass upon the Center without and they are so contrived by the Artist that their orifices agree most exactly so that when they are united they represent an intire Sphere almost In one of the sides there 's a hole and a Brass Spigot in it through which the whole Air within is exsucted and drawn out namely by the help of the Air-pump And when by several exsuctions the Vessels are made empty the Stop-cock is turned about by which means no Air can come in And they remaining empty are taken from the Pump and do cleave so fast together that though a number of lusty fellows 12 on each side do pull vigorously by help of ropes fastned to the Rings yet are they not able to pull them asunder And because this will not do it he yokes in 12 Coach Horses six on every side yet are they not sufficient though they pull contrariwise to other to make a separation But to let the Spectators see that they may be pulled asunder he yokes in 9 or 10 on every side and then after much whipping and sweating they pull the one from the other The cause of this admirable effect is not the fear of vacuity as some do fancy for if that were all the Horses in Germany would not pull them asunder no not the strength of Angels It must then be some extrinsick weight and force that keeps them together which can be nothing else but the weight of the invironing Air. Because no sooner a force is applied that 's more powerful than the weight of the Air but assoon they come asunder And so neither six men nor six horses on each side are able to do it but nine or ten on each side makes a separation For understanding the true cause of this Phenomenon we must consider that the Vessels are 18 inches in diameter I● this be then according to the last Experiment there are two Pillars of Air each one of them as heavy as a Pillar of Mercury 18 inches thick and 29 inches long by which they are united Or each Pillar of Air is as heavy as a Pillar 0● Water 34 foot high and 18 inches in diameter For finding the weight of it in pounds and consequently the weight of each Pillar of Air by which the two Vessels are united follow this method First multiply 9 the semi-diameter of the Pillar by 54 the circumference and this gives you 486 the half whereof is the bounds of the Area namely 243. And because 34 foot contains 408 inches I multiply 408 by 243 the product whereof is 99144 so many square inches are in a Pillar of Water 34 foot high and 18 inches thick Now seing there are 1728 inches in a cubical foot I divide the number 99144 by this number and I find 57 square foot of Water and more And because every square foot weighs 56 pound Trois I multiply 56 by the number 57 and the product is 3192 pound which is the just weight of a Pillar of Water 34 foot high and 18

same bladder and blow it stiff with Wind and knit the neck as afore And you will find that in the up-coming the sides of it will burst asunder with a noise When the Bladder is thus full of Wind 't is supposed that there is a sort of counterpoise between it and the Air of the Ark. But as the Ark ascends the Air of it becomes weaker and weaker while in the mean time the Air of the Bladder suffers no relaxation therefore when the Ark comes near the surface there arises a great disproportion between the one Air and the other as to strength and therefore the Air of the Bladder being the strongest rents the sides in pieces and comes out with a noise Or blow it but half full of wind and you will find before the Ark come near to the top the said Bladder to be bended to the full For a third trial take a Glass such as they use in Caves for preserving of Brandy and stopping the mouth closely take it down with you in the Ark and you will see the sides of it break in pieces before you go down four or five fathom The strong Bensil of the ambient Air is the cause of this If you take it down with the orifice open no hurt shall befal it Or if you stop the orifice in the up-coming you will find the same hurt come to it But here is the difference in the first bursting the sides are prest inward by the ambient Air in the second the sides are prest outward by the Air within the Glass For a fourth trial take a round Glass-bottle pretty strong in the sides and when it is down with you in the Ark 14 or 15 fathom stop the mouth of it exactly and when it comes above you will find a considerable quantity of Wind come out of it when the orifice is opened This evidently demonstrats that the Air within the Ark 12 13 or 14 fathom down is under a far stronger Bensil then the Air above For a fifth trial let a man apply to his skin a cold Cupping-Glass when he enters the Ark and he will find such a swelling arise within it as when it is applied hot by a Chyrurgion This tumor begins to rise assoon as the Ark begins to go down The reason is evident from unequal Pressure the parts within the Glass being less prest than the parts without For a sixth trial take a common Weather-Glass and Place it in the Ark and in the going down you will see the liquor creep up in it by degrees as the Ark goes down as if some extraordinary cold were the cause of it And as the Ark comes up by degrees the said liquor creeps down by degrees The cause of this Phenomenon is not cold as some might judge but the strong Bensil of the Air within the Ark that so presseth upon the surface of the stagnant Water that it drives it up If you take with you a Weather-Glass hermetically sealled no such thing will follow because the outward Pressure is keeped off 'T is not then cold that 's the cause but weight By the way take notice that all common Weather-Glases are fallacious and deceitful because the motion of the Water in them is not only caused by heat but by the weight of the Air which sometimes is more and sometimes less as frequently I have observed and as hath been observed by others This difference is found by the alteration of the altitude of the Mercurial cylinder in the Baroscope which is more and less as the Pressure of the Air changeth In fair weather and before it comes the Mercury creeps up In foul and rainy weather and a pretty while before it fall out it creeps down Because in fair weather the weight of the Air is more than in rainy and dirty weather December 13. 1669. I found the altitude 29 inches and nine ten parts of an inch at this time the heavens were covered with dry and thick clouds and no rain followed March 26. 1670. I found the altitude no more than 27 inches and nine ten parts at which time there was a strong Wind with rain Between these two termes of altitude I have found the Mercury move near a twelve moneth 'T is a most sure prognosticator for if after rain you find the Mercury creep up in the morning you may be sure all the day following will be fair notwithstanding that the heavens threateneth otherwayes If after fair weather the Mercury subside and fall down a little you may be sure of rain within a short time though no appearance be in the present It falls down likewise when winds do blow What the true cause is why there is such an alteration in the Pressure of the Air before foul weather and fair and in the time of it it is not easie to determine But we proceed Trial likewise might be made by fiting a great piece of Ordnance above whether the report would be heard below the Water or not This would determine the question whether Water be a fit medium for conveying sound as Air is Item whether or not the Sea water be fresher at the bottom than near the top which is affirmed by some Item whether sounds be as distinct in such a small portion of Air as they are above This might be tried with a Bell of a Watch. If need were a little chamber Bell might be hung within the Ark and a small chord might pass up from it through the cover whereby the persons above might by so many tingles speak such and such words to the Diver I have demonstrated before that though there were a little narrow hole made in the cover above yet neither Air would go out nor Water come in If a man were curious he might have a window not only in the sides but in the roof above covered with a piece of pure thin Glass thorow which he might look up after he is down two or three fathom and see whether there appeared any alteration in the dimensions of the body of Sun or not or seemed nearer EXPERIMENT XIX Figure 26. THis Figure represents a deep Water whose first and visible surface is F G. The imaginary surface is E L C 34 foot below it A D B is a Siphon working below this VVater with Mercury A E L is a Vessel with stagnant Mercury among which the orifice A is drowned the other orifice B existing among the Water D M is the hight of the Siphon above the line of level which I suppose is 58 inches For making it work stop the two orifices closely and pour in as much Mercury at a hole made at D as will fill both the legs Then stopping the said hole open the two orifices A and B and you will find the liquor run as long out at B as there is any almost in the vessel A E L. For evincing this which is the only difficulty consider that if this Siphon were filled with Water and made to work only