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heart_n left_a lung_n ventricle_n 2,628 5 12.9083 5 false
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ID Title Author Corrected Date of Publication (TCP Date of Publication) STC Words Pages
A60267 Hydrologia chymica, or, The chymical anatomy of the Scarbrough, and other spaws in York-Shire wherein are interspersed some animadversions upon Dr. Wittie's lately published treatise of the Scarbrough-spaw : also a short description of the spaws at Malton and Knarsbrough : and a discourse concerning the original of hot springs and other fountains : with the causes and cures of most of the stubbornest diseases ... : also a vindication of chymical physick ... : lastly is subjoyned an appendix of the original of springs ... / by W. Simpson. Simpson, William, M.D. 1669 (1669) Wing S3833; ESTC R24544 218,446 403

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attenuating of Ayr by heat in an inverted oval glass the water seems to be drawn up by a kind of Suction as some would have it or to prevent a Vacuum as others think but most probably if not demonstratively it ascends gradually and sensibly for this cause viz That when the Ayr in the glass which before by heat was attenuated is either by cold reduced into its pristine form or having as so thinn'd but a languid pressure is therefore by a more strong Elastick force of Ayr upon the surface of the water forc'd up till it come to such a height as the pressure of Ayr within and that without the glass are brought to an Aequilibrium or equal poysure I mean till the springy power of the Ayr within and without the glass be of an equal force and there it stands till the springy power of the Ayr within the glass by heat becomes dilated and then it forceth down the water in the Tube and makes the water in the Viol rise higher proportionable to the degree of the attenuation of the Ayr. 57. That the Ayr receives a considerable alteration by heat is further confirm'd by the experiment of inverting a glass Cucurbit over a Candle fastened with tallow upon the bottom of a glass or earthen Bason wherein water is first poured to the height of two or three fingers breadths where the heat of the Candle doth so weaken the spring of the Ayr within the Glass that it wanting the help of the circulating Ayr always requisite to the perpetuating the motion of bodyes which is intercepted by the body of water that in stead thereof the Water it self circulates being forc'd thereto by the spring of the Air that presseth upon it from without and therefore it riseth up to a great height of the glass-body as I have sometime seen upon tryal thereof and puts out the Candle which Experiment seems somewhat to contradict the former of a Weather-glass though in reality it doth not for although there heat makes it descend but here it makes it ascend yet if we consider that in that of the Weather-glass the Air in it is first thinn'd by heat before the glass be put into water and therefore when it 's condensed by cold it draws up the water or rather the water is forced by the outward Spring of the Air and follows it to an Aequilibrium but in this last Experiment the glass is inverted into water without any previous alteration of the Air therein which being to supply the motion of a body viz. the burning of the Candle doth it for a while but wanting a fresh supply from other Air without to promote the Circulation thereof always necessary for the motion of bodies the want thereof makes the strong spring of the Air upon the surface of the water to force up the water it self into the glass-body From which Experiments result these following Corollaries viz. First That a Circulation of Air is requisite for the motion of all bodies the Candle in the glass we see extinguisheth for want thereof by forcing up the water in lieu of Air. Secondly That Air may be attenuated by the heat of the Sun whereby the same portion of Air may be made to extend it self over a larger space witness the heating the glass in the first of the two last Experiments Thirdly That this Air thus attenuated and extended by the heat of the Sun is the reason why culinary fire dies or goes out when the Beams of the Sun are cast upon it because they thin the Air and the Air is the natural Bellows of Fire which Fire burns according to the intenseness or remisness of the Air. Fourthly That the Air thus thinn'd makes way for water to ascend up the small veins thereof which are like so many slender Syphons by which it mounts from Earth Waters and Seas up into the Clouds for the supply of Rain and Snow which Syphons in droughty hot weather are mostwhat at work carrying it upward whereas in moist weather the water descends by the same Syphons and moisten the Ground with Dew and Walls or Floors of Stone-buildings in wet Seasons so that the reputed Exhalations of moisture by the Sun for the supply of Rain is no other than this gradual steaming up of slender Syphons whereby water mounts insensibly the uppermost part of the Atmosphere Fifthly That in great heat of weather many Diseases happen through the thinness of the Air for the Air in the Lungs is the Bellows of the vital Fire in the Heart which if it become attenuated either through a general heat in the Air whence ariseth frequently some Epidemical Disease or through the obstructions of the Lungs themselves whereby the Air for want of foundness of Organs becomes thinn'd before it come to volatize the Blood in its current from the right to the left Ventricle of the Heart causeth Faintings Lassitudes Candialgia's Asthma's Deliquiums and in Women Swoonings Palpitations rousing up the Spleen and Mother c. yea in fine makes the Lamp of Life burn dark and dimly whereas the Air by cold being reduc'd to its pristine form and the Lungs freed from obstructions quickens the vital Ferment sharpens the appetite makes the vital Fire burn clearly and makes evident that the Ferments of the several Digestions are vital for in cold weather we find our appetites more acuated our Ferments more vigorous and the Digestions more powerful But I will not though I might here further enlarge to shew how the Air in a due order contributes to the invigorating the Ferments and how much it conduceth in the change thereof towards the curing Diseases But I proceed Sixthly And which chiefly concerns our present purpose assert That the heat of the Sun contributes by thinning the Air towards the circulation of water from Seas to Springs and from water upon the earth to Clouds For the Sun whilst he is suppose in the Northern Signs especially towards the Tropick of Cancer casts his rays pretty powerfully upon those Places which are within the oblique position of the Sphere though not perpendicularly as it happens to those Places situated under the right position of the Sphere where the Aequator cuts the Horizon at right Angles whilst he is I say in the Northern Signs by his heat he thins the Air of those Regions especially as those Places fall under the Meridians as some Places must alwaies do the Sun in his supposed Diurnal Circuit making Twenty four Meridians the Air under these Meridians especially in those places where the Sun is or inclines to be Vertical being attenuated makes the Air circulate the more strongly towards the other Quadrants of the Terraqueous Globe causing there a stronger pressure upon the Surface of the Seas and this must be constantly done because the Sun really or apparently is alwayes in motion about the Earth who in his Circuit thins the Air of those Places which lie most directly under his Beams and so makes the Air as