How Does a Tree Grow? Or, Botany for Young Australians — Background and Themes

A Colonial Garden as Classroom

The dialogue begins with Willie’s pride in his garden—cabbages, peas, a rose tree—and his father’s gentle prompting: “Can you tell me what has made it grow?” Willie’s first guess (“the sun and the rain”) is met not with correction but with a comparison to building a brick cottage, where size increases because “more bricks and wood were used.” This analogy, drawn from the child’s own experience, sets the pattern for the whole book. Bonwick consistently translates abstract processes into concrete, domestic terms. When explaining how pollen reaches the pistil, the father lists “the wind blows the yellow dust. A bird throws some about. An insect catches some on its wings and legs.” The language is active, visual, and slightly playful—the pollen is “yellow dust,” the insect “steps on the stigma.” The colonial setting is never far away: Willie has “climbed up a Gum tree” and “picked up manna,” and the father’s own backstory—a failed English businessman who emigrated to “the land of mutton and corn”—gives the science lesson an undercurrent of settlement and adaptation.

Dialogue as a Teaching Tool

Bonwick’s preface explains his choice of the dialogue form: he believes “the sympathies of our young friends will be excited on behalf of the juvenile questioner, and their interest thus maintained.” The result is a text that moves at the pace of a real conversation, with Willie’s interjections (“Well, I never thought about it, father”; “That is singular”) keeping the exposition from becoming a lecture. The father rarely delivers a block of information without interruption; instead, he answers each question and then poses another, building knowledge step by step. For instance, when Willie asks about water plants, the father explains that some “rise to the surface to flower, and sink to seed,” while those that stay below have “a glutinous pollen, which cannot be affected with the wet.” The technical term glutinous is introduced naturally, as a solution to a problem Willie has just raised. This method gives the reader a model of inquiry: curiosity leads to observation, which leads to explanation, which leads to further curiosity.

From Ovules to Seeds: The Pace of Explanation

As the dialogue progresses, the pace quickens and the concepts become more intricate. Willie wants to “peep into the germen or ovary,” and the father obliges, describing ovules as “a sort of nucleus or kernel” placed between “two sacs of open mouths.” The language is vivid but careful: “Nothing goes in, but the pollen of the stamens comes down through them out upon the ovule, and is received to its Embryo, or heart, through a very small hole.” Bonwick uses italics for key terms (Ovules, Embryo) and parenthetical clarifications (“or heart”) to guide the reader without breaking the flow. The father emphasizes that the transformation from ovule to seed is not instantaneous: “Nourishment and time are necessary to growth and change.” This insistence on process—on the gradual, hidden work inside the seed—mirrors the book’s own method: slow, patient, and attentive to the unseen. The final surviving excerpt cuts off mid-explanation, but the pattern is clear: each answer opens a new question, and the dialogue never settles into a monologue.

Bonwick’s book is best read as a performance of scientific inquiry rather than a reference manual. The dialogue form rewards readers who follow the back-and-forth, noticing how the father turns Willie’s everyday observations into botanical principles. Because the excerpts are incomplete, the full arc of the lessons—from roots to flowers to seeds—remains partly hidden, but the method is consistent throughout. Readers interested in nineteenth-century educational writing, colonial Australian literature, or the history of science communication will find in these pages a lively example of how one author tried to make botany feel like a conversation.

The rain blurred the windows that afternoon, and Bonwick’s father-son talk of gum trees felt less like instruction than shared quiet. It made me long for that gentle voice again. Later, by lamplight, I found Plants and their children — A Reader’s Guide, which carried the same unhurried wonder, though its children were ferns and daisies. One book simply left me holding another.