(84?) 
do in the tranfportation^where is added the great ufefulnefs of this 
Iflftrument, with an intimation of others ot a different kind,<£r. 
23. Confirms, that Mercury in a Barometer will be kept fuf- 
pended higher at the top, thanat the bottom of a hill : on which 
occafion fomething is noted about the height of Mountains, e- 
fpecially theP/V of Teneriff, efteeraed to be in its perpendicu- 
lar height 7 miles, by the more accurate observations.. 
24. Shews, that the Preflure of the Atmofphcre may be 
exercifed enough to keep up the Mercury in the Torricell. ex- 
periment, though the Air prefs upon it at a very fmall orifice. 
25. Shews, that #n oblique preflure of the Almofphere may 
fuflSce to keep up the Mercury at the ufual height in the Torr. 
Experiment, and that the Spring of a little included Air may 
do the fame 5 together with the ufe that may be made of the 
former experiment for a portable Barofcopc. 
26. About the making of a Barofcope> thatferves but at cer- 
tain times *, taking notice of the arguments it affords againft 
ZFugd Facui. 
27. About the Afcenfion of Liquors in very flender Pipes in 
an exhaufted Receiver. 
28. Touching the great and feemingly fpontaneous Afcenfion 
of Water in a Pipe fili'd with a compaft Body, whofe particles 
arg thought incapable of imbibing it: by which is examin'd an 
Explication, that has been made of the caufe of Filtration. 
Whence a probable caufe of the Afcenfion of Sap into Trees is 
fuggefted. An attempt annex'd, to make a Syphon, thatlhould 
run of it felf without Suction, 
29. Of the feemingly Spontaneous Afcenfion of Salts along 
the fides of Glafles $ with a conjecture at the caufe of it. 
30. Contains an attempt to meafure the Gravity of the 
Cylinders of the Atmofphere, fo as that it may be exprefs'd 
by known and common weights. . 
31. About the Attractive. Vertuepf xhzLwdftme in anex- 
haufted Receiver. . 
Shews, that when the PrefTure of the External Air is tfc 
km off, 'tis very N eafie*o drawup the Sucker of a Syringe 3 t hough 
tiwe hole, at which the Air, or Water fhould fueceed, be flopt. 
3 3, : About the opening of a Syringe, whofe Pipe was ftopt in i 
tfc exhaufted R wiver, an&by the help of it making the Pref- 
ers Qf the AirJift up a confickrabk weight,;, 
34>;Shewr' 
