OBSERVATIONS ON THE ORIGIN AND SEQUENCE 
OF THE PROTOZOAN FAUNA OF HAY INFUSIONS 
LORANDE LOSS WOODRUFF 
From the Sheffield Biological Laboratory, Yale University 
FIFTEEN FIGURES 
CONTENTS 
TAG EHeTAlZM CL OMUCOLOM aa <A seth als Seah 0 de lel uses Ae RE ee 206 
11. Origin of the protozoan fauna of hay infusions........................ 207 
At REx DORM eT Sis cae Aba Nes Aa i... «cing ae ne a ee 208 
PSE VE SUNG S oat Ate) cman Apap pee eg, en ol sc, 0m Ue oe Begg ket ee 210 
© Conchisvomss arin ktacy eens ak 6 oss nal gt ee tke Ry a 213 
11. Relative number and sequence of representative protozoan forms in hay 
PMMAISUON Sree ro he hea PRS ss inn soos sh Oe ae ee Po oe ee 213 
Gy SHEP ETMMILE TG Siake rave gee AE «os 2 eh Sean ral 215 
B. General observations on the course of development of hay infus- 
LOMSt et Ree eae ls ARS RG ON 8. LS eS srr oN 222 
Cathe As Band. eroups ofinfusions.». 5 42- eee ee een Lee 224 
D. Time of appearance, maximum number and disappearance of rep- 
resentative protozoan forms at the surface of the infusions... .... 225 
freee eee yee aw cet cota a1dih ake Ses, oo ole oc eet GEN 225 
ZAC OUD OMe mee hed Pee a hes Sins ia, cts oe re ee en ca 228 
4 oe © fot] OXON (CLOT Co be nS oe ae ke 231 
APE AT ATT AC GLUT, ert ere Set 0S 2c ue ee eg 234 
DP VOLLIGOUME Hens sce aise 5 «Lies <a nd Oe CI eed ee 236 
Gupta Oe Alea ae Met hee da /\/5 Sr). s/h a ae ae Ae 238 
hy POUMIManysot SULLACeIODSerVAbIONS:. <4... 0. s4r ae aden ee ee 241 
v. Protozoan fauna at the middle of the infusions........................ 244 
vi. Protozoan fauna at the bottom of the infusions....................... 246 
AMUN STON Seka eee ere See has) re A. Foe 246 
2a BliniUstonsseaee Be Pos ie Gonece wens he NEN MER PONT 8 MM oa Bee a i 247 
SR SAITTEULST OAS Pieris PS 2 ft 4nd, re nan RR PLP eh aE hy 250 
vu. Discussion and conclusions from the observations on the sequence of the 
surface, middle: and) bottom faunas. selena... 40... dso: eee 250 
OUR Ce Mauna Aer A tx Cea x ele ae RR tla! So hoa ah a 250 
Zee indie few ais. iret as, 5 rin yess oe MEN SR Oe ek oe 254 
Se DOLLOUMEATENY ef-Rcp. cates. cps a I he tiie hohe! re 254 
£, Factors determining the sequences... 95...4..).2.5.- 6-2 .s24h0- 256 
SDE hineim MUMbETS. -) <2. cs Ae Ae eases Ghee bene 259 
SVB Miag CG: COTUUT ENE @ Lite pegey) ar SEP cS Sins Os ees mR Pca edie tec eos, ote Ce sh tele 260 
IB, GSy }eXULOTU TORSTEN Ag eaten YAO Pom OT DIE Lag Oh es a 262 
