<div class="description">
<dl><dd>Includes index</dd>
<dd>Filmed from a copy of the original publication held by the Library of the Public Archives of Canada</dd>
<dd>43</dd></dl><br>Subjects: Magnetism, Terrestrial; Magnetism, Terrestrial; Magnetism, Terrestrial; Magnétisme terrestre; Magnétisme terrestre; Magnétisme terrestre</div>
<div class="fn value">
Lefroy, John Henry, Sir, 1817-1890</div>
Internet Archive identifier