<div class="description">
Scientific diagram illustrates the percentage composition of foods including a pork chop, cod, egg, cream cheese, bean and bread. Illustrations are after the charts created by Charles Ford Langworthy of the United States Department of Agriculture, published by the Department. Illustration found within junior high school/high school-level textbook on science with topics including air; food; water; weather; fire; heating, lighting and electricity within homes; clothing and microscopic organisms. Begins with a foreword to the teacher with subsequent content including scientific projects and experiments. End of book contains a bibliography of children's books on science as well as as list of equipment needed for text teachings. Scientific diagrams and illustrations can be found throughout the text including printed photographic reproductions of students conducting experiments and lab equipment setups for experiments.</div>
1922<div style="display: none;">date QS:P571,+1922-00-00T00:00:00Z/9</div>
This file was contributed to Wikimedia Commons by <a href="https://en.wikipedia.org/wiki/en:Science_History_Institute" class="extiw" title="w:en:Science History Institute"><span title="library, museum, and archive in Philadelphia, United States">Science History Institute</span></a> as part of a cooperation project. The donation was facilitated by the <a href="https://en.wikipedia.org/wiki/Digital_Public_Library_of_America" class="extiw" title="w:Digital Public Library of America">Digital Public Library of America</a>, via its partner PA Digital.<span style="text-align:left">
<ul><li><a rel="nofollow" class="external text" href="https://digital.sciencehistory.org/works/7s75dd607">Record in source catalog</a></li>
<li>DPLA identifier: <a rel="nofollow" class="external text" href="https://dp.la/item/82d86f700662aa5e78b80023211071d2">82d86f700662aa5e78b80023211071d2</a></li>
<li>Science History Institute identifier: padig:SHI-7s75dd607</li></ul></span>