JOUKNAL 



OF THE 



EOYAL MICEOSCOPICAL SOCIETY. 



Ser. 2.— Vol. III. Part 3. 



(JUNE, 1883.) 



CONTENTS. 



Tbansaotions op the Society — 



PAGB 



VIII. — The Cultivation and Life-Histoey op the Eingwokm 

 Fungus {Trichophyton tonsurans). By Malcolm Morris, 

 F.E.C.S. Ed., and G. G. Henderson, M.D., M.R.C.P. 



(Plate VIL) 329 



IX. — On a Portable Fobm of Aeeosoope and Aspirator. By 



K. L. Maddox, M.D., Hon. F.R.M.S. (Figs. 58 and 59) .. 338 



Summary of Current Researches relating to Zoology and 

 Botany (principally Invertebrata and Cryptogamia), Micro- 

 scopy, &c., including Original Communications prom Fellows 



AND others 343 



Zoology. 



Mesohlast of Vertebrata 343 



Inversmi of Blastodermic Layers in Bat and Mouse 345 



Spermatozoon of the Newt 345 



JJevelopment of the Bed Blood-corpusdes 345 



Origin and Destiny of Fat-cells .. . . 346 



Embryology of the Milk-glands 346 



Caudal End of Vertebrate Embryos 347 



Influences which Determine Sex in the Embryo 348 



Sense of Direction in Animals 349 



Cerebral Homologies in Vertebrates and Invertebrates 349 



Apparently New Animal Type ( Trichoplax adhxrens) 350 



Chlorophyll of Animals 351 



Division of Lower Invertebrates 352 



Chromatophores of Cephalopoda . . 352 



Deep-Sea Solenoconcha 353 



Vascular System of Naiadas and Mytilidse 353 



Generative Organs of the Oyster 354 



Development of Ova in Ascidians 356 



Structure of Ovary of PhaJlusiadas 356 



Embryonic Development of Salpidx 356 



Anatomy and Histology of Brachiopoda Testicardinia 358 



Early Developmental Stages of Ovum in Insecta 360 



Innervation of the Respiratory Mechanism in Insects 362 



Histology of Insect Wing-muscles 362 



Flight of Insects 363 



Locomotion of Insects on Vertical Glass Surfaces 363 



Salivary and Olfartory Organs of Bees 364 



Mimicry of Humming-birds by Moths 365 



Systematic Pohilion of the Archipolypoda .. .. 365 



Anatomy and Development of Peripatus Capensis 366 



New Species of Polydesmus with Eyes 367 



Cajyreildx 367 



Coloration of Idotea tricuspidata 367 



