The unusual iron delicate chandelier with small taps is an evidence of the fact that gas was supplied to the chandelier. In 1861 Butlerov constructed a small gas factory in the basement of the building. He used the designs, which he had brought from the Wurtz laboratory in Paris. Gas was used both for lightning and heating while making chemical experiments.

The history and structure of the gas plant is similar to the history of chemical laboratory, and is completely described in A.Albitsky's brochure "Chemistry Department and Chemical Laboratory of the Kazan Emperor University. The past and the Present", published in 1899. The brochure with inscription "To much respectful A.N.Zaitsev from the author" is kept in the museum.

Butlerov's private collection of books is kept in two bookcases. In 1890 it was gifted to the organic laboratory of the university, where he began his work, by N.M.Butlerova, the scientist's widow. At that time it cost three thousand rubles, and the price of the whole laboratory was about 12900 rubles.

The collection consists of 364 titles included in 644 books. Mainly there are books on chemistry: monographs, books by famous European and Russian scientists with authors' autographs, and lithographic lecture notes by Butlerov and Zinin. Here you can see Markovnikov's and Vagner's theses with their autographs.

The collection of books has always been attracted attention of famous scientists, interested in the history of chemistry, such as A.S.Klyuchevich, N.P.Grechkin, and G.V.Bykov. In 1970 the latter found a rough copy of unpublished Butlerov's letter to Hoffman, written in 1864, in the book of German scientist A.W.Hofmann, titled "International exhibition, 1862. Reports by the Juries. Chemical product and processes", London, 1863, which was sent to Butlerov. In this letter Butlerov thanked Hoffman for the report and told him about trimethylcarbinol for the first time.

The third bookcase represents Klauss works on the elements of platinum group, books by Flavitsky, his textbooks on chemistry, theses, and reprints of scientific articles. Here one can find works by F.M.Flavitsky disciples, who headed the chemistry departments later on, such as A.Ya.Bogorodsky, A.M.Vasilyev and A.F.Gherasimov (Kazan university), and D.K.Dobroserdov (Kiev Polytechnical Institute). Among the professors of chemistry of the Kazan university A.M.Zaitsev had the biggest number of students, namely 72. Their numerous works with inscriptions to the teacher are exhibited in the museum.