INDEX. 179 



U. 



Page 



Unicellular alga?, recent investigations of (reference) 109 



Unio, distribution of species of 51 



wholly wanting west of Rock mountains 48 



Unio complanata, fertilization of eggs (reference) 



Unionidae, abundance of in the Laramie sea GO 



differentiation of fossil forms 59 



distribution of in Michigan (reference) 110 



east of the Appalachians 48 



enormous development of 48 



first appear in lower Cretaceous 54 



found in the Jurassic 59 



influence of brackish and salt water upon 59 



of general distribution over the continent 48 



origin doubtful 58, 59 



possible emigration from the Laramie sea 60 



pre-glacial and other migrations 60 



relations to fossil and living fauna? of Asia 61 



relations to Tertiary fauna of Europe 61 



of California very peculiar 60 



of the interior region 49 



Upland Plover (Bartramia), nesting habits of 68 



Uredineaa of Michigan (abstract) 39 



Uromyces Howei, uredospores mentioned 39 



pisiformis, uredospores mentioned 39 



Sparganii, uredospores mentioned 39 



Utricularia intermedia, covering lake surface 28 



purpurea 28 



resupinata notes on 132 



V. 



Vaccination against anthrax 17 



against symptomatic anthrax 17 



against hog erysipelas IT 



against malignant oedema 17 



Vaccination, of Jenner 17 



Vallisneria spiralis 27 



in Pine river 28 



Valvata and Amnicola, distribution of 47 



Van Zwaluwenburg, A., on development of seed of Gossypium (reference) 109 



Variation of latitude observations (reference) 119 



Variolation in the far east 17 



Vaucheria 28 



Vaughan, Dr. V. C, on black plague (reference) ._ 88 



Venom of rattlesnake, rapidity of action 91 



Vertebrate embryos, apparatus for photographing 111-112 



Vesper sparrow, nesting and food habits 71 



Vice presidents, annual report required from 87 



duties of 148 



how nominated 153 



Vital statistics (reference) 12 



Vital statistics of Michigan 102-106 



Viviparse, distribution of 47-48 



Viviparidae, present distribution of 57,58 



possible origin of 58 



typical forms have wide distribution 47 



Voting and elections, constitution on 149 



W. 



Walker, Bryant, on distribution of the Unionidse in Michigan (reference) 110 



on origin and distribution of mollusca of North America 43-61 



