16 
THIRTEENTH REPORT. 
32. Relation between Good Roads and the Conservation Movement, 
Frank Rogers. 
33. Orthoptera Collected at Douglas Lake. Michigan, in 1910, Avalyn 
E. Woodward. 
34. Observations on the Mammals of the Douglas Lake Region, Orriu 
T. Wenzel. 
35. Odonata Collected at Douglas Lake in the Summer of 1910, Aba- 
gail O’Brien. 
•'to. Results of the Mershon Expedition to the Charity Islands, Lake 
Huron : Mammals. AT. A. Wood. 
37. Ants, F. M. Gaige. 
38. Beetles, A. W. Andrews. 
39. Notes on Limnaea, H. Barrington Baker. 
40. A Catalogue of the Mollusca of Michigan, Bryant Walker. 
41. Notes on Michigan Reptiles and Amphibians, III, Alexander G. 
Ruthven. 
42. ' Notes on the Amphibians and Reptiles of Cass. County, Mich- 
igan, Crystal Thompson. 
43. A Catalogue of the More Recently Described Species of Fresh- 
water Mullusca of North America, Bryant Walker. 
44. Experiments with Chrysomelid Beetles, R. W. Hegner. 
45. The Southwestern Center of Dispersal of the Unionidae, Bryant 
Walker. 
4G. Abnormalities in the Frog’s Vertebral Column, H. Mac Curdy. 
47. The Occurrence of a Cremaster Muscle in a Woman, G. M. Curtis. 
48. The Spermatogenesis of an Orthopteran, CeutliopJiilus latcbricolo. 
Scudder, with Special Reference to the Accessory Chromosome, Crystal 
Thompson. 
49. The Physiological Unity of the Neurone, IT. MacCurdv. 
50. Report on the Crustacea Collected by the University of Michigan, 
Walker Expedition to Southern Vera Cruz, Mexico, A. S. Pearse. 
51. Notes on Michigan Crustacea, I., A. S. Pearse. 
52. Notes on a Palaemon from Kamerun, A. S. Pearse. 
53. The Mershon Expedition to the Charity Islands, Lake Huron : 
Plants, C. K. Dodge. 
54. Hepatica multiloba , Apparently a New Species, S. Alexander. 
55. Quercus auriculata, a Species of Oak New to Science, S. Alex- 
ander. 
56. Plant Societies of the Costal Region near South Haven, Charles 
D. Nelson. 
57. Hammocks and Everglades of Southern Florida, Ernst A. Bessey. 
58. The Orchid Flora of the Vicinity of Battle Creek, C. C. McDermid. 
59. A Preliminary Outline of a Key to the Classification of the Genus 
Helianthus in Michigan, S. Alexander. 
60. Psychotria undata as a Coffee Plant, Ernst A. Bessey. 
61. Notes from the West of Ireland and of American Plants Found 
There, Wm. E. Praeger. 
62. A Leaf-fall of the Camperdown Elm and a Fungus Associated 
With it, J. B. Pollock. 
63. The Ejection of Basidiospores in Gymnosporangium juniperi vir- 
ginianae , G. H. Koons. 
64. Unreported Michigan Fungi for 1910, C. IT. Kauffman. 
