Indeed, the books mostly fail, not only to portray the life of the plant, but even to give an intelligible account of its habitat and appearance; for very few writers, however sound their technical knowledge, possess the gift of lucid description--a gift which depends, in its turn, upon that sympathy with other minds which enables an author to see precisely what instruction is needed. Thus it often happens that, unless personal help is available, it is a matter of great difficulty for a beginner to learn the haunts of flowers, or to distinguish them when found; for when he refers to the books he finds much talk about inessential things, and little that goes directly to the point. One might have thought that a new and strange flower would attract the eye more readily than a known one, but it is not so; the old is detected much more easily than the new. "Out of sight, out of mind," says the proverb; and conversely that which is not yet in mind will long tarry out of sight. But when once a new flower, even a rare one, has been discovered, it is curious how often it will soon be noticed afresh in another place: this, I think, must be the experience of all who have made systematic search for flowers, and it explains why the novice will frequently see but little where the expert will see much. Not until the various initial obstacles have been overcome can one appreciate the true "call of the wild," the full pleasures of the chase. When we have learnt not only what plants are to be looked for, but those two essential conditions, the _when_ and the _where_; the rule of season and of soil; the flowers that bloom in spring, in summer, or in autumn; the flowers that grow by shore, meadow, bog, river, or mountain; on chalk, limestone, sand, or clay--then the quest becomes more effective, and each successive season will add materially to our widening circle of acquaintance.