752 Wisconsin Academy of Sciences , Arts , and Letters. 
Idea-symbols, 359. 
Imperative judgment, 397; its distinc¬ 
tive, 4ul; its essential content, 
399. 
Imperative mode, fallacy of, 397. 
Indian nomenclature, with reference to 
Wisconsin place-names, It). 
Instant angular and linear velocities in. 
complex mechanisms, 514. 
Integral symbolization, 359. 
Interrogative judgment* 401; as to a 
term or adjunct, 413; its control, 
408; its distinctive, 410; its ele¬ 
ments, 413; its essential content, 
409; its expression, 429; its gen¬ 
era, 410; limitation of field con¬ 
sidered, 401; its motive, 406; its 
occasion, 405; its operation, 426; 
its structure, 425. 
Interrogative thought, and its expres¬ 
sion, 353; table of contents for, 
355. 
Interrogative thought, compared with 
other thought, 384. 
Invention, rise of in America, 3. 
Jay, Canada, 608. 
Jean Jussieu, in La Revue, quoted, 9. 
Jegi, John I.—Auditory Memory Span 
for Numbers in School Children, 
509-513. 
Jegi John I., list of published papers 
of, 695 ; memorial address on. 
Jennings, see Reighard and Jennings. 
Jesuit Relations and Allied Documents, 
cited, 19. 
Johnson, John Butleb, memorial ad¬ 
dress on, 683: list of important 
writings of, 686. 
Juday, Chancey— The Diurnal Move 
ment of Plankton Crustacea, 524- 
568 . 
Judgment, the ordinary, 388; essen¬ 
tial content of, 388; its distinc¬ 
tive, 389; imperative, 397; inter¬ 
rogative, 401. . 
Judgment, interrogative as to belief, 
444 ; its elements', 445; its expres¬ 
sion. 458: its operation, 458; its 
peculiarities, 452; its structure, 
454. 
Juel, on nuclear phenomena, cited, 67. 
Junco hyemails (Linn.), 615. 
Junco, slate-colored, 615. 
Kahlenbekg, L.—Action of Metallic 
Magnesium upon Aqueous Solu¬ 
tions,' 299-312. 
Kauffmann, A., on Cythermae, cited, 
119, 129, 132. 
Killdeer. 597. 
Kingbird, 607. 
Kingfisher, belted, 605. 
Klebahn, on nuclear phenomena, cited, 
75. 76. 
Kkez, Konbad, history of, 475, 479. 
LaMdocera aestiva , migration of, 561. 
Lake Mendota, diurnal movement of 
plankton in, 547. 
L a n iu s ludovicianus excubitorides 
(Swains), 618. 
Least sand piper, 596. 
Legleb, Henby E.—A Wisconsin Group 
of German Poets : with a Bibliogra¬ 
phy, 471—184. 
Legleb, Henby E.—Origin and Meaning 
of Wisconsin place-names, with 
Special Reference to Indian Nomen¬ 
clature, 16-39. 
Lehmann, Habbiet : Variations in form 
and size of Cyclops brevispinosus 
Herrick and Cyclops americanus 
Marsh, 279-298. 
Lemoine, G., on action of magnesium, 
cited, 299. 
Lehnee, Victob —Fluoride of Gold, 313- 
315. 
Leptodora hyalina, diurnal movement of, 
538, 541, 542, 544, 546, 547, 549, 
554, 562. 
Lesser scaup duck, 586. 
Liyamentum falciforme hepatis, in liver 
of cat, 621. 
Limnocythere, relation of, to Entocy- 
there, 119. 
Limnocalanus macrurus, diurnal move¬ 
ment of, 546, 547, 555. 
Limosa haemastica (Linn), 596. 
Lochemes, Michael J. (German poet), 
479. 
Locy, W. A., on anatomy of Ranantra 
fusca, cited, 487, 492, 493, 495, 
498. 
Longevity, a study in, 586 ; tables' show¬ 
ing, 60. 
Longspur, chestnut-collared, 613. 
Loomis family, longevity of, 58. 
Loon, 575 ; floating nest of, plate XLIV. 
Loxonchonca, relation of, to Entocy- 
there, 119. 
Machaerina, relation of, to Entocythere, 
120 . 
Maeeklin, Edmund, 480. 
Magnesium, metallic, action upon aque¬ 
ous solutions, 299. 
Mallard, 581. 
Maesh, C. Dwight : On a new species 
of Canthocamptus from Idaho, 112- 
116. 
Mabsh, C. D., on Cyclopidae and Cala- 
nidae, cited, 281. 
Maeshall. Ruth —Ten Species of Ar- 
renuri. Belonging to the Subgenus 
Megalurus Thon. 
Mabsiiall, Ruth— A New Arrenurus, 
and Notes on Collections Made in 
1903, 520. 
Maeshall, W. S.— Entocythere Cam- 
baria (nov. gen. et nov. sp.), A 
Parasitic Ostracod. 117. 
Maeshall. W. S., and Henby Sevebin— 
Some Points in the Anatomy of Ra¬ 
ff antra fusca P. Beauv., 487. 
Martin, purple, 617. 
Mastoaloia Braunii, Grun., figure for, 
109. 
Mastogloia elliptica, figure for, 109. 
Mastoaloia Smithii, figure for, 109. 
McCook, American spiders and their 
spinning work, cited. 181. 
Meadow lark, western. 612. 
Measurements of bats, 631. 
Mechanisms, complex, angular and lin¬ 
ear velocities in, 514. 
