Dr. 3ulius fJmifteiu (a(le): 92aturfrdfte. 

 prof. Dr. 1. mm JFrttfd) (alle): cfcfjtdjte bcr 

 prof. Dr. . &ird)i)off (aHe): SBUbcr au3 ber SBolferfunbe. 

 p. feljmaur: (^Berlin): (Srbe unb 9Jtonb. 

 prof. Dr. <. tJ. Jlartc n0 (^Berlin) : liber SBetcf)- unb (Scfjaltiere. 



Dr. JF. Jlfijcr Don iflttl&cck (cibdbcrg): bitten, cbcn 

 unb @ebrduclje in SRujjlanb. 



Dr. . pro0hauer (^Berlin): %leuctimgftoffe. 



prof. Dr. Rein (Warburg): Sftarocco. 



prof. Dr. 3fil (Berlin): S)a SQSaffcr. 



Dr. Sotjka (9Kiind)en): efunbf)eit(e()re. 



Dr. (I). faf4)enbenj (aEe): liber SBertoanblungen ber Xtere. 



prof. Dr. JF. ^oula (Men): 3)ie Srbe alS SSettforper 

 (Belief, t^r Snnere^, t!)re (Sntftcljimg 2c.). 



prof. Dr. W. DoUnttncr (flarteru^e): ^ometen unb 9}?cteore. 



e pitarbriterfdjaft fjabnt bisljer jugcfagt imb in 

 $usftd)t geftdlt b fjemn: 



$rof. Dr. $fd) er f () n i n Berlin. $rof. Dr. (P. gshtnaftj in eibel* 

 berg. ofrat $rof. Dr. artfd) in eibelberg. SfSrof. Dr. getf)* 

 fUin in Stoftod |>ofrat $rof. Dr. $r in SSien. Dr. @lto 

 Seljagtjcl in eibelberg. . ergau in Iftiintberg. S)o. Dr. 

 f. ernl)*tm in ottingen. ^Srof. Dr. gcrnflein in afle. Dr. 

 f. t(Her in SSerlin. Dr. . gudjcr inSBien. - $rof. Dr. f. gud)^ 

 ncr in armftabt. $rof. Dr. faspart in eibelberg. ^Srof. Dr. 

 ^rcbtwr in reif^walb. $rof. Dr. ^laus in SBien. Dr. |f gcntr 

 in SSerlin. $rof. Dr. itppcl in Xarmftabt. - - Dr. ub. goljn in 

 5)reben. $rof. Dr. gronfjn in afle. f. JFalhc in SBien. 

 f. Dr. @0t. |raos in tuttgart. $rof. Dr. jrranth in Berlin. 

 Dr. @. Jrretjtag in at[e. $rof. Dr. g. o. JFrttfd) in aHe. 

 Dr. ^arhc in 33erlin. Dr. ^crlanb in affel. $rof. Dr. 

 (Ocrlonb in trafeburg. $rof. Dr. inbelt) in $rag. ^rof. Dr. 

 ^tntl in $rag. $rof. Dr. rfef in Warburg. ^Srof. Dr. 

 ^rii^ner in 35ern. $rof. Dr. |ann in SSten. $rof. Dr. 

 gartmann in 93eriin. - Dr. % . uon ortmann in 93erlin. - grei* 

 ^err f . $. oon felfert in SGSien. ^riebr. tion lellroalb in tutt* 

 gart. - ^rof. Dr. fjmng in ^5rag. $rof. Dr. ^. fcr^bcrg in 



