servations on the Plum Curculio, 1108— Corn Root Louse, 
Injurious ^gerians, 1106— Entomological News, 1108— Parasitic Castra- 
tion of Typlocybte, ] 
Embryology : The Byssus of the Young of the Common Clam, 65 — The 
Structure of the Human Spermatozoon. P'eb. 183— New Studies of the 
Human Embryo, Mar. 171— On the Development and First Traces of the 
Anterior Roots of the Spinal Nerves in Selachians, 172— The Matura- 
tion and Fertilization of the Egg of Petromyzon planeri, 173— The Quad- 
rate Placenta of Sciurus hudsonins, 271 — The Origin and Meaning of Sex, 
601 — Homologues in Embryo Hemiptera of the Appendages to the First 
Abdominal Segment of other Insect Embryos, 644— Observations on the 
Placentation of the Cat, 645— Note, 648— Notes on the Development of 
Ampullaria depresm Say, 735— Development of Orangon vulgaris, 737 — 
Development of Sepia officinalis, 738— Extra Ovarian Primordial Ova in 
the Human Emliryo, 827-Karyokinesis in Larval Amblystoma, 827— 
The Development of Micrometnis aggregatus, one of the Viviparous Surf- 
perches, 923— On a Brood of Larval Amphiuma, 927 — The Acquisition 
and Loss of Food- Yolk and Origin of the Calcareous Egg Shell, 928— 
f the Medullary Canal . 
Physiology : On the Rhythm of the Mammalian Heart, 67— Connections 
of Membranous Labyrinth. 69— Function of the Cochlea, 69— A Recent 
Study of "Rigor Mortis"- The Mechanical Origin of the Hard Parts 
of the Mammalia. 71— Inhibition in Mammalian Heart, 173— Meeting 
of American Physiological Society, 174— Physiological Prize, US- 
Proposed International Congress of Physiologists in 1889, 175 — Effects 
of Stimulating Nerve Cells, 274, 830— Gaseous Exchange in the Lungs, 
275— Dr. Bowditch's " Hints for Teachers," 276— Gaskell's Work, 508— 
Heart-Sounds, 648 — Mechanism of Tricuspid Valve, 
' Renal Blood Vessels, 649— Physiology of the Heart ( 
Impulses of Inhil 
The American Physiological Society, 933— On the Origin c 
rsiology < 
650— Spinal Ganglia, 830— Voluntary Impi 
The American Physiological Soc' " " " 
Nervous System of Vertebrates 
'Psychology: Grasshopper Reasoning, 73— Frogs Eating Snakes, 74 — Ob- 
servations on Putorius vison. Mar. 176 — A Peculiar Habit of the Black 
Bass, 178— Minot's Report on Diagram Tests, 276— The Sense of Smell 
in Dogs, 529— Mind and Consciousness, 630— The Psychic Life of Mi- 
in India, 1031— The Home Instinct in Toads 
Archmology and Anthropology: The American Historical Society, 74— 
Major Powell's Linguistic" Map, 74— Appropriations by Congress for 
the U. S. National Museum, 76— Forgeries of Palaeolithic Implements in 
Europe, 79— International Congress of Prehistoric Anthropology at 
Paris, 1889, 79— Mound and other Explorations by Mr. W. K. Moore- 
head, 188 — Two Indian Cemeteries near Romney. Hampshire Co., W. 
Va., 186— Anthropometry, 178— Ancient Mounds at Floyd, Iowa 
{Illnstmted), 186— Anthropometry as Applied to the Determination of 
the Attributes or Powers of the Mind of Man, 514 — Aboriginal Remains 
near Old Chickasaw, Iowa {Illustrated), 650— Mound Explorations by 
W. K. Moorehead, 834— The Recent Accessions to the Museum of the 
Peabody Academy of Science of Salem, Mass 1 
Ethnology: 650, 834 3 
