XXXVl 



LIST OF WOODCUTS. 



PICS. PAPERS AND NOTES ILLrSTEATED. PAGE 



177— The Battle of the Stands Part 5 815 



178— Fine Adjustmeut by the Eye-piece „ 817 



179-80 — Zeiss's Camera Lucida with Two Prisms „ 818 



181-3 — Silver Films for Instruments of the Camera Lucida Class . . ,, 821 



184-5— Sorby's Binocular Spectroscope „ 823-4 



186_7_Fase's Zoophyte Trough, Live-Box, or Growing-Slide .. „ 825 



188 — Mackenzie's Swinging Substage „ 826 



189— Swift's Radial Traversing Substage Illuminator „ 827 



190-2 — Kelner Eye-piece and Equilateral Prism as a Means of 



Illumination „ 828-9 



193_Conditions of Aplanatism for Wide-angled Pencils ,. .. „ 831 



194— Hanaman's Collecting Bottle „ 836 



195-7 — Loewe's Modification of the Eanvier ■Microtome „ 841-2 



198— Knife for Large Sections „ 843 



199— Dayton's Cell ; .. .. „ 844 



200 — Armstrong's Universal Turntable „ 850 



201 — Ayl ward's " Concentric " Turntable „ 851 



202 — Giinther's Photographs of Pleurosigma angulatum .. .. „ 854 

 203-4 — Lacaze-Duthiers' Aquarium Microscope (Eoss Tank Micro- 

 scope) Parte 933 



205-6 — Xachet's Petrograpbical Microscope , 934-5 



207-9— Salt's Pocket Microscope (Swift-Brown Pocket Microscope) „ 936-7 



210— Sidle's " Acme " Lithological Microscope „ 938 



211— Nachet's Porte-loupe „ 939 



212 — Lacaze-Duthiers' Porte-loupe „ 940 



213-4 — Zeiss's Camera Lucida „ 941 



215-8 — Tiglilmann's Cylinder-Diaphragms for the Vertical Illu- 

 minator „ 942 



219-20— Beck's Glass Friction-stage „ 943 



221-3 — ToUes's Mechanical Stage „ 944-6 



224— Goodwin's Growing-slide „ 947 



225 — Diaphragms for Axial Condensers „ 947 



226 — Waller's Section-knife for large Sections „ 955 



227 — Preserving Cover-glasses ,, 958 



228-9— Sidle's " Congress " Turntable „ 959 



