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  <front>
    <journal-meta>
      <journal-id journal-id-type="issn">2411-3336</journal-id>
      <journal-id journal-id-type="eissn">2541-9404</journal-id>
      <journal-title-group>
        <journal-title xml:lang="ru">Записки Горного института</journal-title>
        <journal-title xml:lang="en">Journal of Mining Institute</journal-title>
      </journal-title-group>
      <publisher>
        <publisher-name xml:lang="ru">Санкт-Петербургский горный университет императрицы Екатерины ΙΙ</publisher-name>
        <publisher-name xml:lang="en">Empress Catherine II Saint Petersburg Mining University</publisher-name>
      </publisher>
    </journal-meta>
    <article-meta>
      <article-id custom-type="pmi" pub-id-type="custom">pmi-15395</article-id>
      <article-id pub-id-type="uri">https://pmi.spmi.ru/pmi/article/view/15395</article-id>
      <article-categories>
        <subj-group subj-group-type="section-heading" xml:lang="ru">
          <subject>Геология</subject>
        </subj-group>
        <subj-group subj-group-type="section-heading" xml:lang="en">
          <subject>Geology</subject>
        </subj-group>
      </article-categories>
      <title-group>
        <article-title xml:lang="en">Forty years of crystallography</article-title>
        <trans-title-group xml:lang="ru">
          <trans-title>Кристаллография за сорок лет</trans-title>
        </trans-title-group>
      </title-group>
      <contrib-group>
        <contrib contrib-type="author">
          <name name-style="eastern">
            <surname>Fedorov</surname>
            <given-names>E. S.</given-names>
          </name>
          <name-alternatives>
            <name name-style="eastern" xml:lang="ru">
              <surname>Федоров</surname>
              <given-names>Е. С.</given-names>
            </name>
            <name name-style="western" xml:lang="en">
              <surname>Fedorov</surname>
              <given-names>E. S.</given-names>
            </name>
          </name-alternatives>
          <email>pmi@spmi.ru</email>
          <xref ref-type="aff" rid="aff1"/>
        </contrib>
        <aff-alternatives id="aff1">
          <aff>
            <institution xml:lang="ru"> (Россия)</institution>
          </aff>
          <aff>
            <institution xml:lang="en"> (Russia)</institution>
          </aff>
        </aff-alternatives>
      </contrib-group>
      <pub-date pub-type="epub" iso-8601-date="1910-05-01">
        <day>01</day>
        <month>05</month>
        <year>1910</year>
      </pub-date>
      <pub-date date-type="collection">
        <year>1910</year>
      </pub-date>
      <volume>2</volume>
      <issue>5</issue>
      <fpage>364</fpage>
      <lpage>375</lpage>
      <history>
        <date date-type="received" iso-8601-date="1909-11-04">
          <day>04</day>
          <month>11</month>
          <year>1909</year>
        </date>
        <date date-type="accepted" iso-8601-date="1910-01-25">
          <day>25</day>
          <month>01</month>
          <year>1910</year>
        </date>
        <date date-type="rev-recd" iso-8601-date="1910-05-01">
          <day>01</day>
          <month>05</month>
          <year>1910</year>
        </date>
      </history>
      <permissions>
        <copyright-statement xml:lang="ru">© 1910 Е. С. Федоров</copyright-statement>
        <copyright-statement xml:lang="en">© 1910 E. S. Fedorov</copyright-statement>
        <copyright-year>1910</copyright-year>
        <copyright-holder xml:lang="ru">Е. С. Федоров</copyright-holder>
        <copyright-holder xml:lang="en">E. S. Fedorov</copyright-holder>
        <license license-type="open-access" xlink:href="http://creativecommons.org/licenses/by/4.0" xml:lang="ru">
          <license-p>Эта статья доступна по лицензии Creative Commons Attribution 4.0 International (CC BY 4.0)</license-p>
        </license>
        <license license-type="open-access" xlink:href="http://creativecommons.org/licenses/by/4.0" xml:lang="en">
          <license-p>This article is licensed under a Creative Commons Attribution 4.0 International License (CC BY 4.0)</license-p>
        </license>
      </permissions>
      <self-uri xlink:type="simple" xlink:href="https://pmi.spmi.ru/pmi/article/view/15395">https://pmi.spmi.ru/pmi/article/view/15395</self-uri>
      <abstract xml:lang="ru">
        <p>Отдавая себе отчет о состоянии кристаллографии, в каком я ее застал 40 лет тому назад, и сравнивая его с теперешним, нахожу, что преобразование ее за этот период едва ли не глубже, чем какой-либо другой науки. Близость кристаллографии и химии представляется естественною: обе относятся к наукам промежуточного характера между науками точными, изучение которых целиком сводится к применению методов математики, и описательными, где вообще математически метод не находит применения. Если сравним роль математики в химии и в кристаллографии 40 лет тому назад и теперь, то конечно увидим, что последняя подверглась гораздо большему преобразованию.</p>
      </abstract>
      <abstract xml:lang="en">
        <p>Reflecting on the state of crystallography as I found it 40 years ago, and comparing it with the present, I find that its transformation during this period is almost deeper than of any other science. The closeness of crystallography and chemistry seems natural: both belong to sciences of an intermediate nature, situated between the exact sciences, the study of which is entirely reduced to the application of mathematical methods, and the descriptive sciences, where mathematical methods are not applied at all. If we compare the role of mathematics in chemistry and in crystallography 40 years ago and now, we will, of course, see that the latter has undergone a much greater transformation.</p>
      </abstract>
    </article-meta>
  </front>
  <body/>
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</article>
