128 



THE SMALLEST LIVING THINGS 



Dethysis perlamellosus (de-thi'sis per- 

 la"meT6s-us), 4* 



Diatomaceous (dl"a-t6-ma'shus) earth, 

 14, 63 



Diatomin (dI"a-tom'in), 62 



Diatoms (dl'a-toms) : classification, 49; 

 dependent on bacteria, 22; description 

 of, 62; in scum-covered pools, 42 



Dictyotic (dlk"ti-6t'ik) moments, 77 



Didinium nasutum (dl'dln-i-ttm na- 

 su'tum) : encysting, 36*; food getting, 

 96 ; swallowing a Paramecium, 97* 



Difflugia (di-flod'ji-a) : description of, 

 76 



Dileptus gigas (di-lep'tiis jig'as), 89* 



Diniferina (din'i-fe'rin-a), 48 



Dinoflagellida (din"6-flaj"e-lid'a), 48, 

 49, 65 



Dinophyceae (din"6-fi'se-e) : descrip- 

 tion of, 49, 65 : Ceratium tripos, 66* ; 

 ponyaulax apiculata, 67* 



Dinosaurs (di'no-sors) : rise of, 5 



Diphtheria : bacilli, 18* 



Diplodinium ecaudatum (dip"lo-di'ni-um 

 e-ko-dat'um), 10* 



Distemper: cause of, 15 



Division of labor : see Labor, Division of 



Dogs, Distemper of: cause of, 15 



Drosophila (dr6"s6-fTl'a) : heredity prin- 

 ciples applicable to all other animal 

 life, 3 



Ducks : cause of blood diseases in, 26, 

 30; cause of relapsing fever in, 29* 



Dutton, Joseph Everett (1876-1905), 

 English physician, 28 



Dysentery, Amebic, 103 



Ehrenberg (a'ren-berk), Christian Gott- 

 fried (1795-1876), German naturalist 

 and microscopist : quoted, 23, 91 ; his 

 conclusions re vacuoles, 98 



Eimeria schubergi (I-mer'i-a shoo- 

 berg'i) : life cycle, 106, 107*; asexual 

 sporulation of, 108*; fertilized egg, 

 109* 



Electrolytes : defined, 33 



Encystment : among the chrysophyceae, 

 61; does not change individuality, 36; 

 of ciliates, 86; process of, 35 



Endamoeba dysenteriae (en"da-me'ba 

 dis"en-ter'T-e~), 103 



Endobasal (en"do-bas'al) body, 74 



Endomixis (en"do-mik'sis) : process of, 

 87; restores vitality, 111 



Energy : of protoplasm, 33 ; see also 

 Vitality 



England: chalk cliffs of, 78 



Environment : adaptation to, 101 ; en- 

 cystment a protection against, 35; re- 

 action of protoplasm to, 39 



Epistylis umbellaria (ep"i-sti'lis iim- 

 bel'a-n-a), 84* 



Espundia (es-pun'di-a) : cause, 104 



Ethalium seplicum (e-tha'li-um sep'tT- 

 cum), 98 



Euchrysomonadina ( u-kris'6-mon-a- 



din'a), 48 



Eucrvptomonadina (u-kr!p"t6-m5n-a- 

 dln'a), 48 



Eudorina (u"do-ri'na) : reproduction, 

 56; experiments with, 111 



Euijlena gracilis (u-gle'na gra-sil'is), 

 68* 



Euglena sanguinea (u-gle'na san'gui- 

 ne'a), 69 



Euglenida (u-gle'md-a), 48, 49, 68 



Euglenineae (u-gle"ni-ne'e), 49, 68 



Euglypha (u-gli'fa) : description of, 76 



Euplotes patella (u-plo'tes pa-tel'a) : in 

 division, 83* ; neuro-motor system, 81, 

 82* 



Evolution : a concept based on facts, 1 ; 

 of plants, 53; potential of, 8; see also 

 Derived organizations 



Ex ova omnia, 3 



Excretion: defined, 88; a fundamental 

 activity, 8; among protozoa, 91 



Exuviaella (egz"u-vT-el'a), 67 



Facts vs. theory, 1 



Fats : in protoplasm, 32, 33 



Ferments, 98 



Ferns, Fossil, 6 



Fertilization: by conjugation, 85*; not 

 essential for continued vitality of uni- 

 cellular organisms, 115; produces a 

 new type of fundamental organization, 

 40 



Filterable viruses, 14 



Fish : first appearance, 5 



Fishy odor of water : cause of, 51* 



Flagella (fla-jel'a) : defined, 44; Go- 

 nium pectorale, 51*; in algae, 50; 

 structure, 44* 



Flagellates (flaj'e-lats), Animal: char- 

 acteristics, 71 ; colonies, 75 ; from the 

 intestine of a newt, 74* ; reproduction, 

 74; vitality of, 111; Bodo, 72*; Codo- 

 nosiga cymosa, 73* ; Collodictyon, 

 71*; Giardia muris, 73*; Hyperma- 

 stigidae, 75, 102 ; Poteriodendron 

 petiolatum, 75* ; Scytomonas, 44* ; 

 Trichonympha campanula, 102, 103* ; 

 Trypanosoma brucei, 102 ; Trypanoso- 

 ma gambiense, 74* 



