chyli "... is divided into chapters for publication"

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The success of the genre was such that writers could not just simply cut their books up into chapters for publication in installments; rather, they were forced to ...

http://www.lemondededartagnan.fr/SITE/ENG/fiction_feuilleton...

Części wydawnicze "installments" czyli tomy (volumes).

Opis publikacji zwartej powinien zawierać następujące elementy oddzielone przecinkami: inicjał imienia, nazwisko autora lub autorów, tytuł dzieła, podtytuł (oddzielony kropka), części wydawnicze (np. t. 3, cz. 4), inicjał imienia, nazwisko redaktora...
http://www.uwm.edu.pl/wydawnictwo2/news/7/czytaj/6/zasady-pr...

in·stall·ment 1 also in·stal·ment (n-stôlmnt)
a. A portion of something, such as a publication, issued at intervals.
b. A chapter or part of a literary work presented serially.
http://www.thefreedictionary.com/installments

The Mechanick Exercises, by Joseph Moxon, in London, 1683, was said to be the first publication done in installments.
http://en.wikipedia.org/wiki/History_of_printing

A volume is a single book that is part of a collection; also a bibliographic identifier for a sequence of periodicals.
http://en.wikipedia.org/wiki/Volume_(publishing)

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Note added at 39 mins (2012-01-26 13:49:22 GMT)
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Later in his career, Haeckel produced Art Forms in Nature, a work that he published in a series of 10 installments.
http://www.famousscientists.org/ernst-haeckel/