<p><b>Fig. 210 </b>
</p>
Diagrammatic sketch of the lubrication system of the Enfield engine
<a href="//commons.wikimedia.org/wiki/User:Andy_Dingley" title="User:Andy Dingley">Andy Dingley</a> (scanner)
Scan from <cite class="book" style="font-style:normal"><a href="https://en.wikipedia.org/wiki/William_Ripper" class="extiw" title="en:William Ripper"> Prof. William Ripper, Sheffield Univ. <i>d.1937</i></a> (1913 edition of 1909 book. Originally published in 1889 as "Steam", but later expanded to cover internal combustion engines and so re-titled.)      <i> Heat Engines</i>, <a href="https://en.wikipedia.org/wiki/en:London" class="extiw" title="w:en:London"><span title="capital and largest city of the United Kingdom">London</span></a>:  Longmans, pp. p. 302,fig. 210  <small></small></cite>