2 The sample description

For the observations we selected all Case galaxies in the zone $\delta$ = $+29^{\circ} \div +38^{\circ}$ from the Case lists III, IV, V, VIII, XI, XII and XIII which were classified in the Case survey by some indication on the presence of [OIII]$\lambda\lambda$4959, 5007 emission lines ("vs'' - very strong, "s'' - strong, "m'' - medium, "w'' - weak, "w?'' - weak?) and which had not been observed yet. A few galaxies from lists I and II not observed in the Salzer et al. (1995) were observed as well. We did not observe about 30 galaxies in that zone from the lists IV and XIII (Sanduleak & Pesch 1987; Stephenson et al. 1992), which J. Salzer (private communication) has already observed (but has not published yet). To check the accuracy of the redshifts and to estimate the types of spectra we observed also several Case ELGs, which were already observed.

A few galaxies from the lists IX and XI, which were outside the main zone were observed when we were not able to observe the objects from the main program. In total we selected 183 Case ELG candidates, out of which we could observe 178. Additionally nine Markarian galaxies in the same sky region were observed with the hope to have better completeness in picking up all probable BCGs. Three of them appeared to be the galaxies in the Case catalog -- CG 795, CG 859 and CG 1210 -- but without indication of [OIII] emission in the catalog. Altogether we observed in this program 187 objects.

All the observed objects are presented in two tables: in Table 2 -- those with detected emission lines, and in Table 4 -- those where emission lines have not been detected in the blue part of the spectrum. Further selection of BCGs from the ELGs of Table 2 and their combining with other BCGs in this zone from the cited papers will be the subject of a separate article.