158 NOVILM ORGAN UM. 



Ad sccundam. 



7. Practicetur etiain speculum coinbureiis in flainma 

 communi. 



Ad tertiam. 



8. Coinctarum (si et illos immenire inter meteora 

 libuerit) non deprelieiiditur constans aut manifestus 

 ejiectus in augemlis ardoribus unni, licet siccitates so&amp;gt; 

 ]ius inde sequi notativ sint 1S . Quinetiam trabes, et 

 &amp;lt;-&amp;lt;&amp;gt;liuniia&amp;gt; lucithv, et cliasmata 1:I , et similia, apparent 

 sa pius tcinporibus livbrniis, quam a-stivis; et inuxiine 

 per intensissiuia trigora, sed conjuncta cum siccitati- 

 bus : &quot;. Kulmina tauien et coruscationes et tonitrua 

 raro eveniunt hyeine, sel sub tempus inagnorum t er- 

 voninr 1 . At stella- (cpias vocaut) cadeutes, existimau- 

 tur vul&amp;lt;n&amp;gt; iua t ^i^ constare ex viscosa alicpia materia 

 spleudida et at-ccnsi, quaiii esse uatura; igneai ibr- 

 tioris :&amp;gt; -. Srd de hoc iiKpiiratur ulterius. 



the fuel that Ural is ivfran^ible ; &quot; lon^a fax, trains specie, in crelo 

 and (like Li-rht of different colours) apjiaivns.&quot; Ciua-st. Nat. vii. 4. Co 

 ll eat from different sources lias IUHIIHC. tiua-st. Nat. vii. 20. Chasma, 

 different decrees of n i t ranril)ility. &quot; (iiiuin alitjuod c&amp;lt;rli sjiatiurn disce- 

 1-orbes has established the polari/a- dit, et Hammam dehiscens velut in 

 tion of Heat from both luminous abdito ostendat.&quot; Quaest. Nat. i. 14. 

 and non-luminous sources : he also They are clearly names for the Au- 

 depolarized Heat; and as this is a rora Horealis. 



consequence solely of double re- &quot; The Aurora Horealis is proba- 



fraction, he thereby has proved that bly caused by electricity, which is 



Heat is subject also to the Laws of most active when the weather is 



double refraction. See Turner s dry. 



Chemistry, Heat, p. 1420. ;&amp;gt;1 This is now accounted for by 



W Comets (as Bacon apparently what is known of Electricity; yet 



thought) have no effect on either thunderstorms do sometimes occur 



Heat or Drought, except perhaps in Winter. 



when they approach so near our For the probable nature and 



planet as to affect the Atmosphere, cause of falling stars, see Herschel s 



The belief to the contrary is still Elements of Astronomy, part III. 



almost universal. chap. xvii. 898 ; and Humboldt s 



49 Trabes, columna, chasmata are Kosmos. 

 all described by Seneca. Trabes 



