JOURNAL 



OF THE 



KOYAL MICEOSCOPICAL SOCIETY. 



Ser. 2— Vol. I. Part 4. 



(AUGUST.) 



CONTENTS. 



Transactions of the Society — tagk 



IX. — On some Eemarkable Enlaegements of the Axial Canals 



OF Sponge Spicules and their Causes. By Professor 



P. Martin Duncan, M.B., F.R.S., Pres. E.M.S., iProfessor of 



Geology and Mineralogy in King's College, London. (Plates 



VII. and VIII.) 557 



X. — On a Blue and Scarlet Double Stain, suitable for Nerve 

 and many other Animal Tissues. By B. Wills Eichardson, 

 F.E.C.S.L, Vice-President University of Dublin Biological 



Association 573 



Summary of Current Eesearches relating to Zoology and 

 Botany (principally Invertebrata and Cryptogamia), Micro- 

 scopy, &c., including Original Communications from Fellows 



AND others 575 



Zoology. 



Mesohlast of the Verlehrata 575 



Embryonic Sternum 575 



Development of Parrots 575 



Structure of the Mammalian Ovary 576 



Structure of the Epidermis and Rete Malpighii in young Fowls 577 



Albuminiparous Glands in Amphibians and Birds 577 



Eyelike Spots of Fishes 578 



Forces of Living Matter 578 



Hypotheses ^cith regard to Perception of Light and Colour 579 



Action of Light in the formation of Hcemoglobin 580 



Phosphorescence in Organic and Inorganic Bodies 581 



Peculiarities in Marine Animals 582 



New Biological Journal 582 



Invertebrate Fauna of the Firth of Forth 583 



Fauna of the Swiss Lakes 583 



Olfactory Organs and Nervous System of the Mollusca 583 



Neic and Rare Cephalopoda 586 



Giant Squids 586 



Ink-bag of the Cephalopoda 58G 



Regeneration of Lost Parts in the Squid 587 



Enemies of Ostreiculture 687 



Mollusca of the Gulf of Mexico 587 



Tunicata of the ' Challenger ' Expedition 589 



Organization of the Simple Ascidians 690 



Development of Lithonephria 592 



Anatomy of Pyrosoma ., 593 



Australian Bryozoa 593 



Tertiary Bryozoa, &c., from Beggio {Calabria) 59 i 



Germinal Layers of the Insecta . . . . 595 



Perfect State of Prosopistoma punctifrom 596 



Habits of Ants 597 



Slrnfture and Afmities of Carlmiiferous Myriapoda 598 



A natomy of Epeira 598 



Crustacean Deformities 599 



Development of the Amphipoda 599 



Limulus polyphemus (JOO 



Stomatorhiza of Saceulinu carcini GOl 



