AriltHMFf rnUAl, IU)TANV. JJJJ 



ilii<l<-i' Mm- o\i<ll/lMK liilliK-iici- ol' liK't'iiHi^ lilt' rlii-orii<)K<'ii <>f tipple kIv<>h iIhc Id ii 

 pIk'iiM'iil ulilfli iiiii.v Im- n-diici-d by li.vilrl(»(llc iidd, Hlinly of IIiIh nnd n-lnlcil pin- 

 iiDtiiciiii vviiM pxlciidcd In II iiiiiiilii'i- of pliiiilM, wlilch ni'i- IIhIimI ncfDfiWwy, In liitlr 

 iciidliicHH or riilliirc of rcHjHdiHf lo IchIh. 



'I'Im> niilliorH cliiliii lo \m\ti hIiowii IIdiI. IIh' plii'iiiiiiicnn iiliiicivi'il In jodln I'ulnr 

 tcHlH II H' iilvviiyH preceded hy I lie ;ie(l(»n «»r n liiceiiMe. In every r-iiHe where llie 

 preHerice of liieeiiHe vviiH deiiioliHlniled lliere were hIiowii lo lie preHeiil, HiiliHliitieeH 

 <)Xldl/iil»ii- Ity lluil: eii/yiii, liiil. wliefe cliroiiioKeiiH were mel with II wiiM iiol, iilwiiyH 

 pdMMJIih; l(» deiiiuiiHlnih^ llie jiresenee of liieeiiHe. 



R«cent. fitudloH ro.KnrdinK ^ha proHonc« of reduction and oxidation rnKiotiH 

 in plant cella, II. HriiNKiDiai (ZlHilir. n/««. MlkrtiH. u. MlkroH. Tt.r.lt.., .11 (lUUf), 

 No. //, pp. /i7H'/tl)l).~TU\H \h lnrK((ly ii conlniverHliil iirtlele. 



Plant plR-ments: Their color and InterrelatlonHhlpH, 15. Houowitz (/tUnluni. 

 Hill. I, ilUir,), No. in, pp. nil n.i). TIiIm Ih n dlHcuHHlon ol' eoiilrlhiilloiiH l»y 

 viiri(»iis iiiilliorH lieiiiiiiK up"" IlK'se loples. 



Recent ntudlcH on the plKi>'<)iitH of chromoloucltoH, V. liiiiiiMKN i<(i (dompL 

 Kcnd. Avail. Sri. |/V///«|, IdO U'.tir,), No. H, pp. '/.77- 'JiHO ) . 'iln: iiiiIIkm- Iiiih eoii- 

 lliiiK'd prevloiiH liiveHllKiitioiis (10. S. U., .'51, p. 128), nnd elnhriH lli<! rcHiiltH to 

 show Hull (lie pl^^nienlH iiHHoelnted with chlorophyll undergo ulti-ratlon, uhhocI- 

 nled Willi llie iieilvlly of oxldizlu^c (riizyiriH, diirliiK Ihe IrunHfoririiilloii of ehloro- 

 leiicllcs iiilo ejiioinohMicltcH. Mxiiiiiliiuthtii of the yellow iilKineiits <-oiitnliied In 

 llie hiller Is Hiiid to hIiow tluit nil lliese |)l;<ineiitH resolve IheiiiwIveH Into two dlw- 

 tliK't Kroii|)S, oiKr of enrolliioIdH liiMoliihh; In eoneeiil ruled fornile iield, and iin- 

 olher of xiiiilliopliylloldM, wliieh (IIhhoIvc^ iiionr or lens eiiHlly In Mint nrld. TIm' 

 ♦•iirol liM»ldH form ii Herles (d' HiiltHliiiieeH which lire, iiM lo optlcnl nnd chemical 

 properlleH, liil(!rmedliil(^ hetwiutn enrol In nnd xnni hopliyll. 



Itrlelly Hinted, Ihe evolution of the plKini-ntH contnlned In IIk; chloroieuclteH In 

 Hie courw* of their tranHformntlon Into chroinoU'iUclteH nwultH in tint formation 

 of HubHtnnces wlilch nrcf ntlnted to c-nrotln, xnn( hopliyll, nnd I heir rrrHpfjctlvo 

 Isoira-rH, lycofdn nnd rhodoxnnthln. 'I'he nj»|)enriiiic(! of HuhHt;inceM lnleriiiedlnl.<{ 

 |jotwe(!n tlicHe I'oiir jirlncljinl forniH, nn w<;ll as the, formnllon ol I In' hitler two 

 (which do not exlHt In Ihe chloroleiicltr-H), mny he nttrlhiiled lo Ihe rec||H'ocnl 

 clKiinlcnl pror-cHHi'H of oxidnllon and reduction, the counteihnlniicliiK of ench of 

 these hkiiImsI the other IuivIuk hh ii r<'Hult Ihe Htahlllty np|»nrent In lh«! chloro- 

 phyll nnd ncconipnnyln;; jdKiiientH. 



Antioxidase of tomato plants, V. l>iJiiiMKNK<i (C'ompL Ji'.vnd. Ar.ad. HcL 

 IJ'nriH], 1(10 (I'.Ur,), No. 15, pp. J,l U-I,H I ).— In order to ti'Ht tlu; hypothcHlH re- 

 HidllnK from the work al)Ovo rioted, tiiat oxIdlzliiK <'rizyniH art! I Ik; excltnnlH of 

 ciiaiiKt'S noted during the nllcrratiotiH In Ihe chlorophyll, lli<; aiilhor leHtttd lomitto 

 fruits <luriiiK several succcisslve s(iik<"S of dev<!lo|»nieiit nnd rlpeiM-ss, reiK-ldnj^ 

 th(! con<'liisl<»n tlint the tissues of such friillH <'ontHln nn enz-yin which opposeM 

 tlie oxIdlzliiK t(?ndency of jieroxldnse. "^I'lils (Mi/ym hns heen calh-d antioxldns<\ 

 It Is nppnn-ntly fiiiich more s<!nslt)ve than Is p(;roxldnse to the InlliKMice of 

 vurlouH antlH(?ptlcs. Tlu; (puxntltativu ratloH ixitwotni tlusso two opp<jsed suh- 

 HtanceH In tii(! several tlssu<!S "vary In wnys which an; described lor dlffenMit 

 HtaK<'s of lh(! jilant's d(!velo|»nient. 



The experimental modification of germ plasm, I>. '\\ MacIxmmiai, (Arm. 

 AfiHHOuri Hill. (Jii.rd., 2 (I!)/.'}), No. 1-2, pp. 2.'i:i-27^i, jlyH. h- 'I'ldn article, whh-li 

 Is partly crHlcnl, cites niso former (10. S. It., 2r>, j). .''.27) and recent results of 

 ex{)erlinentntlon tending, It Is cinlmed, to i)rove thnt tin; K''rm plasm Is not 

 nnnllenihle. 



Recent investigatlonB on the j^rotoplasm of plant cells and its colloidal 

 properties, I''. (V/ai'kk (Ann. MUhouH Hot. (Jard., 2 {tiHT}), No. 1-2, pp. 2/if- 

 252). — UevlowlriK critically earlier nnd re<'ent conirlhiitlons, the author holds 



