Nature provides inspiration for every sentiment that contributes to the happiness of man, as she provides sustenance for his various physical wants. But all is not gladness that elevates the soul into bliss; we may be made happy by sentiments that come not from rejoicing, even from objects that waken tender recollections of sorrow. As if Nature designed that the soul of man should find sympathy, in all its healthful moods, from the voices of her creatures, and from the sounds of inanimate objects, she has provided that all seasons should pour into his ear some pleasant intimations of heaven. In autumn, when the harvest-hymn of the day-time has ceased, at early nightfall, the green nocturnal grasshoppers commence their autumnal dirge, and fill the mind with a keen sense of the rapid passing of time. These sounds do not sadden the mind, but deepen the tone of our feelings, and prepare us for a renewal of cheerfulness, by inspiring us with the poetic sentiment of melancholy. This sombre state of the mind soon passes away, effaced by the exhilarating influence of the clear skies and invigorating breezes of autumn, and the inspiriting sounds of myriads of chirping insects that awake with the morning and make all the meadows resound with the shout of their merry voices. SONG OF THE WOOD-SPARROW. [Illustration: de de de d d d d d r r r r r r r r r r r r r r r r r r r r r r r r r r r r r r r r re.] NOTE.--In the early part of the season the song ends with the first double bar; later in the season it is extended, in frequent instances, as in the notes that follow. SONG OF THE CHEWINK. [Illustration: twee ta t' we we we we twee tu t' we we we we] SONG OF THE GREEN WARBLER. [Illustration: Hear me St. The - re - sa. Hear me St. The - re - sa.] SONG OF THE WOOD-THRUSH. [Illustration: too too tillere ilere tillere tilere too issele issele tse se se se s s s s se too tillery tillery oo villilil villilil too too illery ilery eh villia villia villia oo airvee ehu, etc.] NOTE.--I have not been able to detect any order in the succession of these strains, though some order undoubtedly exists, and might be discovered by long-continued observation. The intervals in the above sketch cannot be given with exactness. SONG OF THE VEERY. [Illustration: e-e ve re a e-e verea e-e verea e-e verea vere lil lily] or, [Illustration: e villia villia villia villia ve rehu.] NOTE.--I am far from being satisfied with the above representation of the song of the Veery, in which there are certain trilling and liquid sounds that hardly admit of notation. SONG OF THE RED MAVIS. [Illustration: drop it drop it cover it up cover it up] pull it up pull it up tut tut tut see see see there you have it hae it hae it see tut tut work away work away drop it drop it cover it up cover it up.] NOTE.--The Red Mavis makes a short pause at the end of each bar. These pauses are irregular in time, and cannot be correctly noted. NOTE OF THE PEWEE.