134 



THE SMALLEST LIVING THINGS 



Spirochaeta plicatilis (spl"r6-ke'ta 

 pli"ka-til'is) : characteristics, 23, 24* 



Spirochaetes (spi'ro-ketz) : defined, 23; 

 chromatoid granules, 32 ; coccoid bod- 

 ies, 24*, 32; from the intestine of a 

 newt, 74* ; importance, 23 ; nuclei, 32 ; 

 reproduction, 25, 26, 30; spread of 

 diseases* caused by, 27 ; Cristispira, 

 25* ; Leptospira ictero-hemorrhagiae, 

 30; Leptospira interrogans, 30; Sap- 

 rospira, 24*, 25; Spirochaeta plica- 

 tilis, 23, 24*; Treponema duttoni, 27 

 28; Treponema gallinarum, 29*, 30 

 Treponema ictero-hemorrhagiae, 30 

 Treponema interrogans, 30 ; Trepo- 

 nema microgyrata, 26*; Treponema 

 pallidum, 27* 30; Treponema recur- 

 rentis, 27 ; Treponema schaudinni, 27 



Spirochaetoses (spI"ro-ke-to'ses) : trans- 

 mission of, 104 



Spirosoma (spi"ro-s6'ma) : see Trepo- 

 nema 



Spondylomorum quarternarium (spon"- 

 dil-6-mor'um kwor"ter-na'ri-um), 56* 



Sponges : first appearance, 5, 6 ; "green 

 cells" of, 58 



Spontaneous generation : theory of, 3 ; 

 false idea, 12; never accomplished ex- 

 perimentally, 6 ; statement of T. H. 

 Huxley, 7 



Spores, Asexual, 106 



Sporoblasts, 108 



Sporocyst, 108, 109* 



Sporozoa (spo"ro-zo'a) : description of, 

 105; sexual maturity, 114; typical life 

 cycle, 107* 



Sporozoite (sp6"r6-zo'it), 106, 107* 



Sporulation (sp6r"d6-la'shun) : in Fo- 

 raminifera, 78 



Staphylococci (staf"i-16-kok'si) : de- 

 fined, 19 



Starch : in protophyta, 53 



Starvation : effect on protozoa, 89* 



Staurastrum (sto'ra-strum), 59 



Stegomyia fasciatus (steg"6-mi'ya 

 fash"ii-a'tus), 30 



Stephanosphaera pluvialis (stef'a-nos- 

 fe'ra ploo"vT-al'Ts), 56* 



Stimuli from environment : see Adapta- 

 tion 



Streptococci (strep"t6-k6k'sl) : defined, 



., 19 



Streptococcus pneumoniae (strep"to- 



kok'iis nii-mo'ni-e), 19 

 Suctoria (suk-to'n-a) : cilia of, 80 ; 



food getting, 95 

 Sugar-cane: mosaic disease, 15 



Surirella (su"rir-eTa), 64 



Swarmer cells : among chlorococcales, 



58; Sphaerella lacustris, 54* 

 Symbiosis (sim"bi-6'sis) : between ants 



and protozoa, 75, 103*; between Chlo- 



rella and Paramecium bursaria, 58 ; 



between Chlorella and sponges, 58; 



between the Chlorococcales and pro- 

 tozoa, 65 

 Synedra affinis (si-ne'dra a-fm'is), 64 

 Synura uvella (sin'u-ra 66-vel'a) : 



cause of disagreeable taste and odor 



in water, 60, 61* 

 Syphilis : cause of, 26, 27*, 30 

 Tables : botanical classification of algae, 



49 ; geologic chronology, 5 ; zoologi- 

 cal classification of plant-flagellates, 48 

 Tanning : bacteria used in, 22 

 Teleosts (tel'e-ostz) : first appearance, 5 

 Termites : protozoa prepare food for, 75, 



103* 

 Texas tick fever, 28 



Thallophytes (thal'6-flts) : characteris- 

 tics, 47 ; zoospores, 44 

 Theory vs. facts, 1 

 Tick fever : cause, 26, 27, 28 

 Ticks : transmit disease, 104 

 Tissue : cells forming, 9* ; made of 



groups of cells, 10 

 Tobacco : bacteria used in curing, 22 ; 



leaf mosaic disease, 14 

 Todd, John L. (1876- ), Canadian 



physician, 28 

 Toxin: defined, 19 



Trachelomonas (tra"ke-16-mon'as), 68 

 Treponema (trep"6-nem'a) : description 



of, 26 

 Treponema duttoni (trep"6-nem'a dut'- 



to-m) : discovery of, 27, 28 

 Treponema gallinarum (trep"6-nem'a 



gal"ll-nar'um), 29*, 30 

 Treponema ictero-hemorrhagiae ftrep"- 



6-nem'a Tk-ter-o-hem-6-raj'I-e), 30 

 Treponema interrogans (trep"6-nem'a 



Tn-ter-ro'ganz), 30 

 Treponema microgyrata (trep"6-nem'a 



mi"kro-jT-rat'a), 26* 

 Treponema pallidum (trep"6-nem'a 



pal'Id-iim), 27*, 30 

 Treponema recurrentis (trep"6-nem'a 



re-kur-en'tis), 27 

 Treponema schaudinni (trep"6-nem';\ 



shau-din'I), 27 

 Trichocysts (trik'6-sTsts) : of Actino- 



bolus, 95* ; of Paramecium, 83* 

 Trichonvmpha campanula ('tr!k"6-nlm'fa 



kam-pan'u-la), 102, 103* 



