![Studies in natural history. Natural history; Natural history. 52 IOWA STUDIES IN NATURAL HISTORY Swing Marks. These are common in the sandy parts of the desert as they probably are in Studies in natural history. Natural history; Natural history. 52 IOWA STUDIES IN NATURAL HISTORY Swing Marks. These are common in the sandy parts of the desert as they probably are in](https://c8.alamy.com/comp/RR87CE/studies-in-natural-history-natural-history-natural-history-52-iowa-studies-in-natural-history-swing-marks-these-are-common-in-the-sandy-parts-of-the-desert-as-they-probably-are-in-sandy-regions-in-all-parts-of-the-world-so-far-as-the-writer-knows-no-name-has-been-applied-to-them-and-the-name-swing-mark-appears-to-be-as-good-as-any-they-are-formed-by-the-swinging-to-and-fro-or-round-and-round-of-stems-or-roots-of-plants-which-are-anchored-at-one-or-both-ends-the-commonest-form-is-produced-by-a-grass-stem-which-is-broken-over-at-the-surface-of-the-sand-but-not-quite-broken-off-as-this-RR87CE.jpg)
Studies in natural history. Natural history; Natural history. 52 IOWA STUDIES IN NATURAL HISTORY Swing Marks. These are common in the sandy parts of the desert as they probably are in
![Single To-Fro Glider This tire swing is created for safe and fun play for pre-toddlers and toddlers. | Toddler playground, Preschool playground, Toddler swing set Single To-Fro Glider This tire swing is created for safe and fun play for pre-toddlers and toddlers. | Toddler playground, Preschool playground, Toddler swing set](https://i.pinimg.com/originals/73/aa/21/73aa2155d737693b8a70b5a5f7a5d598.jpg)
Single To-Fro Glider This tire swing is created for safe and fun play for pre-toddlers and toddlers. | Toddler playground, Preschool playground, Toddler swing set
![1964 - The Balance and the Swing: Some children prefer to teach themselves to 'tight rope' across..., Stock Photo, Picture And Rights Managed Image. Pic. ZUK-19600115-P01-K09-044 | agefotostock 1964 - The Balance and the Swing: Some children prefer to teach themselves to 'tight rope' across..., Stock Photo, Picture And Rights Managed Image. Pic. ZUK-19600115-P01-K09-044 | agefotostock](https://previews.agefotostock.com/previewimage/medibigoff/10630cde135a57b890913ee264f8eb33/zuk-19600115-p01-k09-044.jpg)
1964 - The Balance and the Swing: Some children prefer to teach themselves to 'tight rope' across..., Stock Photo, Picture And Rights Managed Image. Pic. ZUK-19600115-P01-K09-044 | agefotostock
![Spooky swing in forest. The swing is abandoned. It is being hit by a glow of light on the swing and the grass in front of it. The swing is hanging fro Spooky swing in forest. The swing is abandoned. It is being hit by a glow of light on the swing and the grass in front of it. The swing is hanging fro](https://c8.alamy.com/comp/W40NF4/spooky-swing-in-forest-the-swing-is-abandoned-it-is-being-hit-by-a-glow-of-light-on-the-swing-and-the-grass-in-front-of-it-the-swing-is-hanging-fro-W40NF4.jpg)
Spooky swing in forest. The swing is abandoned. It is being hit by a glow of light on the swing and the grass in front of it. The swing is hanging fro
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![Spooky swing in forest. The swing is abandoned. It is being hit by a glow of light on the swing and the grass in front of it. The swing is hanging fro Spooky swing in forest. The swing is abandoned. It is being hit by a glow of light on the swing and the grass in front of it. The swing is hanging fro](https://c8.alamy.com/comp/W40NEY/spooky-swing-in-forest-the-swing-is-abandoned-it-is-being-hit-by-a-glow-of-light-on-the-swing-and-the-grass-in-front-of-it-the-swing-is-hanging-fro-W40NEY.jpg)