" I for Mineralogical Research 57 " II " " " 60 Stereoscopic Microscope 69 Swing-out Condenser 20 =T.= Thoma's Haemacytometer 71 Thoma Knives 96 Travelling Microscopes 53 Trichinoscope 91 Tube length 8 Tubeuf drawing Apparatus 77 Turn-table 101 Türck counting chamber 72 =U.= Unna's Microscope 33 =W.= Warm Stages 80 Water-Immersion 12 Welsbach lamp 83 Printed by Fr. Richter, Leipzic. =Transcriber's Notes:= hyphenation, spelling and grammar have been preserved as in the original minor punctuation changes made without notes Page 5, and specimens. focal length. ==> and specimens. Page 10, will suffice tho show ==> will suffice to show Page 15, eye-pieces may he changed ==> eye-pieces may be changed Page 17, movement on Stands AI, Ia ==> movement on Stands A, I, Ia Page 22, the purpore of modifying ==> the purpose of modifying Page 25, in tis central portion ==> in its central portion Page 26, has the folloving advantages ==> has the following advantages Page 26, is absolutly no limit ==> is absolutely no limit Page 43, an excellent loboratory stand ==> an excellent laboratory stand Page 47, Exe-pieces I, III. ==> Eye-pieces I, III. Page 54, size like the I. b. ==> size like the Ib. Page 59, stand with these accessoires ==> stand with these accessories Page 61, the and of the tube ==> the end of the tube Page 62, The fit inside ==> They fit inside Page 64, The case consists ==> The base consists Page 68, Aplantic triplets 64-68 ==> Aplanatic triplets 64-68 Page 69, Magnifikation, 20 diam. ==> Magnification, 20 diam. Page 71, micrometric measurment ==> micrometric measurement Page 78, Mechanical stage Nr. 98 ==> Mechanical stage No. 98 Page 85, 42 und 64 mm ==> 42 and 64 mm Page 90, removed duplicate 'Transport 250.--' Page 91, also wheter it is direct ==> also whether it is direct Page 91, a continual, flow ==> a continual flow Page 97, 136. Lenght of cutting edge ==> 136. Length of cutting edge Page 98, with melled and graduated ==> with milled and graduated Page 99, forms port of an ocular ==> forms part of an ocular Page 99, any disired position ==> any desired position Page 99, The gange measures 0,01 ==> The gauge measures 0,01 Page 103, light.