Behavior
 

November, 2000. Artificial Life: Boids of a Feather Flock Together
Cost:NA	Difficulty:	Danger 1: (No Hazards)	Utility:
December, 1996. Dissecting the Brain with Sound
Cost:$0-100	Difficulty:	Danger 1: (No hazards)	Utility:
November, 1975. How to Build and Work with a Skinner Box for the Training of Small Animals
Cost:$0-100	Difficulty:	Danger 1: (No hazards)	Utility:
May, 1967. How to Study Learning in the Sow Bug and Photograph Tiny Live Crustaceans
Cost:$0-100	Difficulty:	Danger 1: (No hazards)	Utility:
December, 1966. An Amateur's Experiment in Animal Behavior and a Study of the Salty Rain of Venezuela
Cost:$0-100	Difficulty:	Danger 1: (No hazards)	Utility:
October, 1964. Experiments in Phototaxis: the Response of Organisms to Changes in Illumination
Cost:$0-100	Difficulty:	Danger 1: (No hazards)	Utility:
June, 1963. A Simple Analogue Computer That Simulates Pavlov's Dogs
Cost:$0-100	Difficulty:	Danger 1: (No hazards)	Utility:
March, 1961. A Young Amateur Experiments with a Plant That Collapses Its Leaves When Touched
Cost:$0-100	Difficulty:	Danger 1: (No hazards)	Utility:
February, 1960. An Amateur Asks: Does a Hummingbird Find Its Way to Nectar Through Its Sense of Smell?
Cost:$0-100	Difficulty:	Danger 1: (No hazards)	Utility:

Botany
 

March, 2001. Geotropism, One Last Time
Cost:$100+	Difficulty:	Danger 2: (Minor injury possible)	Utility:
February, 1996. Growing Plants in Less Than One G
Cost:$0-100	Difficulty:	Danger 1: (No hazards)	Utility:
June, 1970. The Effects of Gravity on Plant Growth, and the Deposition and Use of Thin Films
Cost:$0-100	Difficulty:	Danger 2: (Minor injury possible)	Utility:
March, 1967. Two Kinds of Apparatus for Growing Plants in a Controlled Environment
Cost:$0-100	Difficulty:	Danger 2: (Minor injury possible)	Utility:
August, 1966. Stimulating Plant Growth with Ultrasonic Vibrations; Electrical Discharges in a Gas
Cost:$0-100	Difficulty:	Danger 3: (Serious injury possible)	Utility:
January, 1966. How to Cultivate the Slime Molds and Perform Experiments on Them
Cost:$0-100	Difficulty:	Danger 1: (No hazards)	Utility:
December, 1963. Some Experiments on the Effects of Ionizing Radiation on Plants
Cost:$100+	Difficulty:	Danger 3: (Serious injury possible)	Utility:
April, 1962. Experiments with a Plant Growth Inhibitor and a Report on a Fixed-Eyepiece Telescope
Cost:$0-100	Difficulty:	Danger 1: (No hazards)	Utility:
December, 1958. On Experiments with Gibberellic Acid Which Stimulates the Growth of Plants
Cost:$0-100	Difficulty:	Danger 3: (Serious injury possible)	Utility:
October, 1952. On the Culture of Plants Without Soil, and the Behavior of the Telescope-Maker's Pitch
Cost:$0-100	Difficulty:	Danger 1: (No hazards)	Utility:

Entomology
 

September, 1997. The Mysteries of Migrating Monarchs
Cost:$0-100	Difficulty:	Danger 1: (No hazards)	Utility:
July, 1997. How-to's of Butterfly Rookeries
Cost:$0-100	Difficulty:	Danger 1: (No hazards)	Utility:
June, 1997. Getting Inside an Ant's Head
Cost:$0-100	Difficulty:	Danger 1: (No hazards)	Utility:
August, 1996. Detecting Micron-Sized Movements
Cost:$0-100	Difficulty:	Danger 1: (No hazards)	Utility:
December, 1995. Measuring the Metabolism of Insects
Cost:$0-100	Difficulty:	Danger 2: (Minor injury possible)	Utility:
March, 1993. Flight-Testing Fruit Flies
Cost:$0-100	Difficulty:	Danger 1: (No hazards)	Utility:
November, 1983. Looking into the Ways of Water Striders, the Insects That Walk (and Run) on Water
Cost:NA	Difficulty: NA	Danger 0: (NA)	Utility:
October, 1954. On the Collecting of Moths and Butterflies, and Some Ingenious and Attractive Sundials
Cost:$0-100	Difficulty:	Danger 2: (Minor injury possible)	Utility:

Genetics
 

July, 2000. PCR at Home
Cost:$100+	Difficulty:	Danger 1: (No Hazards)	Utility:
September, 1998. Spooling the Stuff of Life
Cost:$0-100	Difficulty:	Danger 1: (No hazards)	Utility:
June, 1994. Genetically Altering Escherichia Coli
Cost:$0-100	Difficulty:	Danger 2: (Minor injury possible)	Utility:
June, 1965. How to Study the Genetics of Fruit Flies with Chromatograms Viewed By Ultraviolet Lamp
Cost:$0-100	Difficulty:	Danger 1: (No hazards)	Utility:
December, 1952. On Mouse Genetics and a Variety of Things of Interest to the Avocational Astronomer
Cost:$0-100	Difficulty:	Danger 1: (No hazards)	Utility:

Lab Technique
 

March, 2001. Geotropism, One Last Time
Cost:$100+	Difficulty:	Danger 2: (Minor injury possible)	Utility:
August, 2000. How to Rear a Plankton Menagerie
Cost:$0-100	Difficulty:	Danger 1: (No Hazards)	Utility:
June, 1999. Museum Secrets of Preserving Plants
Cost:$0-100	Difficulty:	Danger 1: (No hazards)	Utility:
December, 1998. Sorting Molecules with Electricity
Cost:$0-100	Difficulty:	Danger 1: (No hazards)	Utility:
October, 1998. Spying on an Invisible World
Cost:$0-100	Difficulty:	Danger 1: (No hazards)	Utility:
April, 1998. Experiments Out of Thin Air
Cost:$0-100	Difficulty:	Danger 3: (Serious injury possible)	Utility:
March, 1998. The Pleasures of Pond Scum
Cost:$0-100	Difficulty:	Danger 1: (No hazards)	Utility:
January, 1998. A Kitchen Centrifuge
Cost:$0-100	Difficulty:	Danger 3: (Serious injury possible)	Utility:
October, 1997. Recording the Sounds of Life
Cost:$0-100	Difficulty:	Danger 1: (No hazards)	Utility:
July, 1997. How-to's of Butterfly Rookeries
Cost:$0-100	Difficulty:	Danger 1: (No hazards)	Utility:
February, 1975. The Pleasures and Problems of Raising Snails in the Home; Snail Anatomy
Cost:$0-100	Difficulty:	Danger 1: (No hazards)	Utility:
December, 1972. The Joys of Culturing Spiders and Investigating Their Webs
Cost:$0-100	Difficulty:	Danger 2: (Minor injury possible)	Utility:
October, 1970. The Color Vision of Pigeons Is Tested in a Skinner Box
Cost:$0-100	Difficulty:	Danger 2: (Minor injury possible)	Utility:
September, 1969. Antigens and Antibodies Are Studied By Their Diffusion Patterns in Agar
Cost:$0-100	Difficulty:	Danger 2: (Minor injury possible)	Utility:
April, 1966. How to Perform Experiments with Animal Cells Living in Tissue Culture
Cost:$0-100	Difficulty:	Danger 2: (Minor injury possible)	Utility:
November, 1965. How to Isolate From Samples of Topsoil Microorganisms That Secrete Antibiotics
Cost:$0-100	Difficulty:	Danger 1: (No hazards)	Utility:
March, 1965. On Collecting and Preserving Animals That Live Along the Edge of the Sea
Cost:$0-100	Difficulty:	Danger 1: (No hazards)	Utility:
August, 1964. Extraction of Growth Promoting Substances From Cantaloupe; Tests with Rolling Balls
Cost:$0-100	Difficulty:	Danger 1: (No hazards)	Utility:
February, 1963. How to Collect and Preserve the Delicate Webs of Spiders
Cost:$0-100	Difficulty:	Danger 1: (No hazards)	Utility:
May, 1961. Mostly on How to Make Impressions of Biological Specimins in Plastic
Cost:$0-100	Difficulty:	Danger 2: (Minor injury possible)	Utility:
December, 1959. About Experiments That Demonstrate the Function of the Thyroid Gland
Cost:$0-100	Difficulty:	Danger 1: (No hazards)	Utility:
September, 1959. An Amateur's Controlled Experiments Measure the Effects of a Tranquilizing Drugs on Rats
Cost:$0-100	Difficulty:	Danger 1: (No hazards)	Utility:
July, 1959. How to Keep Various Reptiles Healthy and Happy in the Home
Cost:$100+	Difficulty:	Danger 1: (No hazards)	Utility:
March, 1958. How to Cultivate Harmless Bacteria and Perform Experiments with Them
Cost:$0-100	Difficulty:	Danger 3: (Serious injury possible)	Utility:
March, 1956. On the Scientific Study of Tropical Fish and a Sundial for the Ceiling of a Room
Cost:$100+	Difficulty:	Danger 1: (No hazards)	Utility:
December, 1955. About the Preparation of Microscope Slides, the Testing of Telescopes and Other Matters
Cost:$0-100	Difficulty:	Danger 1: (No hazards)	Utility:
July, 1955. Concerning Microscope Illumination and an Unusually Steady Telescope Mounting
Cost:$0-100	Difficulty:	Danger 2: (Minor injury possible)	Utility:
December, 1954. About Cultivating Algae From the Soil and Making Steady Telescope Mountings
Cost:$0-100	Difficulty:	Danger 1: (No hazards)	Utility:
March, 1954. About Snakes, the Other Side of the Moon and Unusual Telescopes to Follow Rockets
Cost:$0-100	Difficulty:	Danger 1: (No hazards)	Utility:

Ornithology
 

February, 1998. Bird Watching By the Numbers
Cost:$0-100	Difficulty:	Danger 1: (No hazards)	Utility:
April, 1997. The Joys of Armchair Ornithology
Cost:$0-100	Difficulty:	Danger 1: (No hazards)	Utility:
July, 1996. Covert Observations of Nesting Sparrows
Cost:$0-100	Difficulty:	Danger 1: (No hazards)	Utility:
January, 1996. Recording Nature's Sounds
Cost:$0-100	Difficulty:	Danger 1: (No hazards)	Utility:
October, 1970. The Color Vision of Pigeons Is Tested in a Skinner Box
Cost:$0-100	Difficulty:	Danger 2: (Minor injury possible)	Utility:
February, 1960. An Amateur Asks: Does a Hummingbird Find Its Way to Nectar Through Its Sense of Smell?
Cost:$0-100	Difficulty:	Danger 1: (No hazards)	Utility:
December, 1957. The Strange Story of Robert Stroud, Who Studied Birds While in Solitary Confinement
Cost:NA	Difficulty: NA	Danger 0: (NA)	Utility:
May, 1952. About the Banding of Birds and the Cooperative Building of a Telescope
Cost:$0-100	Difficulty:	Danger 1: (No hazards)	Utility:

Physiology
 

June, 2000. Home is Where the ECG Is
Cost:$0-100	Difficulty:	Danger 1: (No Hazards)	Utility:
December, 1995. Measuring the Metabolism of Insects
Cost:$0-100	Difficulty:	Danger 2: (Minor injury possible)	Utility:
July, 1969. The Metabolic Rate of Small Animals Is Measured in a Homemade Apparatus
Cost:$0-100	Difficulty:	Danger 2: (Minor injury possible)	Utility:
September, 1959. An Amateur's Controlled Experiments Measure the Effects of a Tranquilizing Drugs on Rats
Cost:$0-100	Difficulty:	Danger 1: (No hazards)	Utility: