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Contents OF Number- 20S.- %';iif 



Page. ^^^ • 

 XXr. Con: parative Anatomy;. or a slight Attoinpt to' 'iSit-^ [ 

 fpi j?j^ draw up a Compprison bi;twecn Animal and Vegetable Life. M'M ' 



\^^tv 3y ^/frs. Agnes Ibsetson - ' '- -■ ... SI |i|;?i» j 



M}i\ XX?L Cn Citric Acid^ By Samuel Parkes, F.I..S. 

 ^'^^ijvd.G.S. Sec. - , - w - - ICO 



it 



fVm, -XXIII. Prnpo3-.il for a new Rep;ulation of Weights and |||'j 



^^ Measures. Ey A Corrkspondent - - •- lISll'jj'p?. 



^?ii"i ■ XXIV. Some Observations on Steam-Eri<>iries ; \vr h -a- \'^s^M 

 ^' ■'■- ----- ■- ■'- •■^'^ 



i 



'c;^,Ji;'/Tabi2 of 'Work dore byxertaiii Engines in Co-r.v.-all, from ^'i^-^h 



™';:^ x^iurjujt lSl|»io May IS15, both Mr,-ii.ths inciiisivc: showing ••■ -^H' i'l'tV 



'■'' ■ h:-!n.onf]i.ly C<^nsii!iip;ioa of C'oal by the r.n.-^inesreported'; ^'^ *' 



eaca 

 cne 



ff^/ Foot^Ligh, .. - - - - - ^i^W'^j 



(.'\^ '■■-l XXV, Specification of. Mr. Arthur V/oolf's latest 'i'l^^ 

 \\ W ^^'-t?"' for cqrtain ImprovementiJ in xl:o Co;>ftrucLioii and Kn!'S^^ 

 >..•- ,'1 Working of Steam-Eirn-ines - - - - ' JlSOv^'^vv-^ 



*'-'-'',!■' ' Ai-^^i 



r.V>r 'v' XXyi. On the Size best adapted for Achromatic Glasses ; ' ^^i^^ 

 ^;';' ,'/'■ vith Hints to Opticians and Arr^atcurs of as'^ronomical ^vii 

 1 '':>,-,:' •'r';«dii:Sj on the Cnnstnictv';'.! and Use of Te5escopcs in ge- £.-'f?-^, 



yj--^:'n-vd. By W.KiTCHENUR, M.D. - - 122||^|!J 



V|f~;1 XXVII. Memoir" on the Nature of fit Substances. By ^!^^J 

 f'lVjl' Henry- Eracon'sot, Profoswrof Natmai rlistor}', anJ Di- >0 j^l^j], 



.'<■.! ipv rector of the Garden, of Fia«tsat Nuuci - - 120 li-'.^^ 



<;v"^ XXVIIT. An InvestigfstioR of 'h-3 Pressure sustained by 

 ^r-|\>^Uhe fixed Suppoit'3 of 'fle.K!bk Subott(*fe . - - 1 



1^1 XXiX. Noticf* respectin-^ New Books • - - 145;^;>fiJi 



v:' l,^ XXX. IntcI%en«G 'and MiscellavreousxVrticles:— Royal Mm 



• r^:-i?. Society. — CnemVir y. — C;ucu] us found in a Tumour in the h^i''^' 

 ■;■ "' '/kit Hypochoudiiu. — Van Mon;. — Rain-Gauge. — Meteoric '^"V 



%v,''^ -^J^ones. — LecLuro5.-*-MsteoroIog':c:J. Table -, IS'O- — I60|i>i; , 



f-'sL.'fi? ' " i't'-l 



/^■i4 . — • i:-vi 



V ■■••■;•-' - . ' k^' 



*«;* ComJK-iinicatior-.s fOr this Work, addressed to the Editor,? ., 



V ■ ; rlclittt- Place, Tcjr.ole Bur, v. ill meet with Tvery attention, V-;" ■ 



;■>-•-/ ' * , ' .^ '■ _ ' ' — i'l 



EICHA&D AND A&rHUtt TAYLOR, P&INTBK.8, SHOE LANE>L0NnO 



