gife)pi.''oMlSffp^fefeble'thaf these %gSi^^ by currcnis of 



aft"8M^tffe ^JJ^atian of water, may fill the atmosphere, and 

 8lf*feh>lM#^ifl'y from aridity, because they appear to settle 

 aAA^flJ^f^fi^^thfemselves every where, and are perhaps percep- 

 tlbfe''?fr^h'fe 'Organized matter, the pyrrhine of the atmosphere 

 observed by chemists. But as to living infusoria and meteoric 

 animals, or what are called Atmospheric Zoophytes, found in 

 currents of air, we cannot believe in their existence until better 

 evidence than the present is brought forward. The forms not 

 hithei*to satisfactorily observed are, to zid io\ ibGai haE ^faiuarJ 

 1. Kolpodapyrum, Miiller, according^o GrlefchenV i^dJ>«iJo^/ 

 S. Indeterminate infusoria, accprdiijg to Bory, iOtlorntgna-j 



3. Furcularia rediviva, ^ )SBhiBo aril ^niilisni': bii3 ^^^rniw 



4. Monas termo^^ ^^ ^^ e > According to Trofess<^i-SthultZ(^^ 'io 

 ^. Monaklen^'^^ff^f^'^ ^d^ 



-SBsdiloJduob'^fii. pc^^^,i^5^'^ Annalem No. 4, fur 1830. 'o> 

 .CTsbbsb tB3i^ odJ jVJjV/ ? fo jiooa -^niud aoiiiuoiftib 



Oniline of a Plan for combining Machlneryi ivitU the Mdrit^ 

 Printing-press. By John Cleuk Maxwell, Esq. of MaS^ 



dlebie* (With a Plate). - - ' i' '^ c">' ^^^^^ 



ijointoqqR i6tjimro«>0 orU lio K'^»Hrri<^»fflf b berafifi noscf. ■)^nr/£H . 

 On a former evening of this session, (Jan. 5.) a paper by Mr Fra- 

 ser, suggesting various improvements on the Art of Printing, was 

 read before the Society, in which, after pointing out the exceL 

 lency of the Printing Machines, invented by Messrs Cowper 

 and Applegath, and by Mr Napier, for the purpose of publi- 

 cations of large numbers of copies, and where expedition was re- 

 quired; he noticed, that, for fine printing, they were inferior to 

 the manual press, although they excelled in one point, viz. the 

 uniformity in inking, and consequent equality of colour of the 

 printed sheets. . He also observed, that, for economy in the ease 

 of small publications, the manual presses had the advantage. 

 And concluded by stating, that a contrivance which should give 

 the manual press the benefit of uniform inking, with a diminu- 

 tion of labour, was a desideratum in the art of printing. -iu( 

 • ^-^Eead^l^fdf^^he Society of Arts for Scotland, »d March 1631. -'^-"^ 



