Notes and Memoranda — continued. pack 



The " Micro-Megascope" ^"" 



Chlorophyll •• •• ^^^ 



Function of Chlorophyll in the green Planarix 161 



Development and Metamorphoses of Txnix 162 



Another Method of Staining 163 



Size of Society Screw and of Slides 163 



The Termination of the Visceral Arterioles in Mollusca 164 



Hxmocyanin a neio Substance in the Blood of Hie Octopus 164 



Chromatic Function in the Octopus 165 



Neio Classification of Thallophytes 166 



Fungoid Diseases of Plants 167 



Organization of Hygrocrocis arsenicus,Bieb 169 



Tiie^'Plastids" of the lower Plants 170 



Stiiining for Fungi ..• , 17" 



Spines of Echini • 171 



The Locomotor System of Medusa 171 



Tetrapteron volitans - 17^ 



The Algx of the White Sea 173 



Achromatic Lenses 173 



Development of Spongilla fluviatilis 174 



Morphology and Systematic Position of the Spongida 177 



Sponge- spicules 177 



Gloidium, a neio genus of Protista 179 



Preparation of Microscopic Aquatic Animals 180 



The Postal Microscopical Society 180 



Life- History of the Diatomarex 181 



Movements of Diatoms and Oscillatoriese 182 



The Use and Abuse of Diatoms as Test Objects 183 



Measurement of the Amplification of Optical Instruments 184 



Liicosporangium, a new genus of Phceosporese 186 



Eeproduction of Ulvacese 186 



Nosloc-colonies in Anthocerotese 187 



Support for the Head in Drawing with tlie Camera Lucida 187 



Aleoholic Fermentation 187 



Bacteria in the Poison of Serpents 189 



Flagellated Organisins in Eats' Blood 190 



Dtceptive Appearances produced by Reagents 191 



Preparation of Red Blood-corpuscles 191 



Apparatus for Determining the Angle of tlie Optic Axes of Crystals with the 



Microscope 191 



Artificial Crystals of Gold 193 



The Vertical Illuminator 194 



Reproduction of Noctiluca 195 



Bibliography .. .. .. .. .. .. .. .. 196 



Proceedings of the Society .. .. .. .. .. ..211 



Meetings of the Society. 



1879. 

 Wednesday, April 9. 

 „ May 14. 



„ June 11. 



1879. 

 Wednesday, October 8. 



„ November 12. 



„ December 10. 



