EXERCISE XCIX. BACTERIUM WELCHII Mig. 
: BACILLUS AEROGENES CAPSULATUS. 
First described by Welch in 1892. Occurs at autopsies in which gas bubbles are present in the larger vessels, accompanied by the 
formation of numerous small cavities in the liver containing gas. It has been found also in emphysematous phlegmons, in puerperal 
sepsis, in peritonitis and in other conditions (M. & W.). Widely distributed in nature. (Welch.) 
REFERENCES. Welch and Nuttall: Bull. Johns mii a ii 1892, 3; 81; Welch & Flexner: Jour. Exp. Med., 1896, 1;5; A. 140; 
M. & W. 173; McF. 463; P. 545; S. 781. 
SKETCHES. 
Incubation 
temp. (@C.) 
MoRPHOLOGICAL CHARACTERS. BO 
1. Form: 
@. Bowillon Juccsscxvsese vac Repent biuret sh ea cays deren antida wate ea Seandnared ontatoteen he Semen eee aInnaaihs eek temiaisiaies | smc] deleWeeter 
Be COU POU B IBS isis a eadinisiind sob asatsind Maio wissser a te wielens@u ds 4 dhadra Sein radioisaalbGe yanis gega He OEMS a woe Meeeb ta Bik oa kines 
BH APPANBOMEDIE cc picn see gaeens dacs Meena rawdied eres uel shed rendoda ee ee tke aparewad anaes ei epde PERE ED MORE WON 
ATO WES Sc cree sid aassassians Vasvsuisenelns acre ceereidraaghtnacta Hie by ameeaesion mendes MERE REG eins WARTS OE NG Aaah alayeaeaananl HE dewenee e erausreners 
@ Staining Powers: 2s eccers dacmecin cs oe Seas cane do LISkSag be Hewes aot sasbs de MacwleMilad se eaun Heine Menard Tee mia ie Se dateieptle meio i 
@, AQUEOUS FON EAT =VIOLEE ij cc nie a eb aigniaes ealeiaitiasaininie oo ie leis cde nae seldn inde heele As TR MANES 86 be Ree eet pu getgtne rly sem 
&. Loeffler’s methylen-blue 
) Gran’ s Stains sieisigitzetacioetyavisie Se wa ccliie ders anctapss usdig is easrsiais otsisied ve ible a aise wie RE iets SE Re wvemMae aaded ele Miasie wreeteuesiaten] sie! Geese ffeateleyens ee 
@: Special Stains: ve gisns ponacoe vs te ores ceva vaeean bene FAIRE RDO RR ET Gren errr rere eee ee ete ib der aed secant lb Wantawece 
Bie MGCL ty Sas sisaccsinc ue ub side wosded ganacnd Ue BE ht eine aes ow ie DERRAS Sakae amas Neke wote Heoies are ee oS A eR eRe Ed eeR ve eames [ae oe chee seeds 
Gi Character of MNOVEMENE souls Nes2 Gi dh dane neGaawdyad Anaedee Suva syy waves wealnetora WE8G: bdfahe Ghesadubscicuduelaey dendpersaltienasert haces Sie Mek Gee a [SOLER So Mesa 
b-. Plagella'stainsescac wacicir axa deaiesiaias peeians ie aida camer oa reine Ge ENA OG TL EAN Betex FORCE CRU IT, | Dee Sl Net er 
Ox SPOreSiccein cansmes sa teeter wan prelialenas vig careaieeiid Mesiemad ae sel nels@g hase aE Daletesld oh Hpae wlNNes 9.9 vaeretha Ne Se SideareetREe avdalesie ats SaaeR eal alee Agia Sse RAMS 
as Spectal CHATACTETS, SUCGHCAS! 4.41 Hadacaucdd te teditaaneseddenguuad es ii ei GM BRS ila, Ge ea eb a AG HER ALD DAES ALB DETR O eae bebe HAE Sasa 
déposits, vacnolesiseciccsncsac: — wins eswtiia erin tates Sa ea Sean heed Seb neonate a4 Mate ae maecde bh uboh eadwen GA a ambainel ke aeames lesaceune 
‘pleomorphic and dnvolution forms; capsulesy, eteisuiinss sic ciize xiarcisie dare aivisiesustais viaiate wicca cia semiereiaie BHC aiclige wictatha atin wiaickgiasied eaten ages [ls08 Pplenite 
PHYSIOLOGICAL CHARACTERS. 
1. Relation to temperature : Sees joka Sen tha hdd els slop a tae py “a ana “a i dear aphdd Tua PddUASAE (Sha Sve GiRNEin Cea Se avoia raean ose Maca AatS EINE <45 GAG BlecaLR 4H HAGE RARE REINS ahaa DIR REIS. ci-Re Ta Menmaeee SoeaiAO 
5. Gas production in glucose media: 
@. Shakesculture ci sisise se wets aeawsetitad sed wiped sadaietensitins ve nwueeSiarein dimen aitiby va ae Geena NEUTUle Rha wine se. aitlad He Ga sed edna gS ean’ visas by Wale banSard naan asain eH . 
b, Fermentation tube, growth in: (1) open arm: 
(3) rate of development: 24 hours.............-.. 
(4) reaction I OPE AP. coc sne nice coed erinwe tops besos on oe me Nena meReuMBE ae nee, 
6. Acid or alkali production, litmus milk. 
7, Réduction of nitrates: to nitrites .:ccs.2 2x2 sexy ca ve eamep Ree eee easy Ss de cnet eenaonaed vee . 
&. Indel production; ap hourSicsansee ca oc vows senraee se oe tent 
fecal Odor 24. hOUTS 3:23 sscsiecce ve aoven aieays eae aes 
g. Enzyme production: proteolytic.............. Side auletaa 24 Migeae BY te ve Sut hesien nod oe aicdde i 
