Meet the living subject or observe the natural phenomenon first. Ask a few questions aloud and give students time to discover what observation can answer. Leave the unanswered questions for later research. A sketch or written narration belongs in a paper nature journal.
This historical lesson is reproduced as a source, not as current animal-care, collecting, medical, or experiment advice. Observe wildlife without disturbing it, follow local rules, and check present-day safety guidance before any hands-on work. Never look directly at the Sun.
01How to use this lessonA short field guide for the adult
Let the subject lead.
Read the teacher material in advance if possible. During observation, select only the questions the student can investigate today. Do not answer on the student’s behalf while there is still something to see, hear, compare, or measure safely. Afterward, invite an oral narration or a picture in a paper nature journal. Discuss remaining questions only once observation is complete.
02The teacher’s readingComstock’s original preparatory text
The teacher’s reading
Text from the original handbook. Page markers are omitted; layout is adapted for reading. The source may reflect 1911 knowledge and practices.
Teacher’s Story
LIKE bubbles cut in half, these delicate domes catch the light rays and separate them like a prism into waves of rainbow colors. One of these domes is usually about the size of an ordinary bowl, and is suspended with the opening on the lower side. It is held in place by many guy-lines which attach it to surrounding objects. Above a filmy dome are always stretched many crisscrossed threads for some distance up. These are for the purpose of hindering the flight of insects, so that they will fall into the web. The little spider, which always hangs, back downward, just below the center of the dome, rushes to its prey from the lower side, pulls it through the meshes of the web, and feeds upon it. But any remains of the insect or pieces of sticks or leaves which may drop upon the web, it carefully cuts out and drops to the ground, mending the hole very neatly.
03The original lesson and questionsTake these to the subject itself
Questions to explore
Choose what fits this encounter. Some original prompts ask for collecting, handling, or other historical activities; use a safe observation instead. Write or draw only in a paper nature journal.
The Filmy Dome
Leading thought—One little spider spins a filmy dome, beneath the apex of which it hangs, back downward, awaiting its prey.
Method—On a sunny day in late summer or early autumn, while walking along woodland paths, the careful observer is sure to see suspended among the bushes or in the tops of weeds, or among dead branches of young hemlocks, the filmy dome webs. They are about as large as a small bowl, and usually so delicate that they cannot be seen unless the sun shines upon them; they are likely to be exquisitely iridescent under the sun’s rays. Such a dome may be studied by a class or by the pupils individually.
Observations—1. Where did you discover the filmy dome? What is the size of the dome? Does it open above or below? How is it held in place?
2. Are there many crisscrossed threads extending above the dome? If so, what do you think they are for?
3. Where does the spider stay? Is the spider large and heavy, or small and delicate?
4. What does the spider do if an insect becomes entangled in its web?
5. Throw a bit of stick or leaf upon a filmy dome web, and note what becomes of it.
Comstock, Handbook of Nature-Study, Lesson CXIII. Read the illustrated original at Project Gutenberg. Public domain in the United States.