II The MICRUSCOHICAI. JOUKNAIv AI^VERTISER. 



THE MICROSCOPICAL JOURNAL 



Contents for February, 1894. 



< >n the Study of Yeasts, with Deseiiptiousol" the Hansen Culture llox aud 

 of a New lufectiou Needle tor the Study of Lower Cryptogames, 



by J. Christian Bay. (Illustrated) :i.i 



Aeration of Tissues and Organs in Mikania and Other Phanerof^ras, by 



AV. W. Rowlee 45 



Centering Device for Turn-Table, by E. E. Masterman. (Illustrated) 49- 



Radiolarian Shale from Manitoba, by Fred 'k P>.. Carter ol 



On the Development of the Continental Form ot Microscope Stand, by J. 



B. Nias, M. D. (Illustrated) .">:i 



Collecting and Studying Parasitic Insects, by Herbert Osborn. (Illus- 

 trated) 5() 



A Homogeneous Objective Condenser, by William Lighton 59 



Letters to the Editor.— ^Kush Medical College Kl 



Tariff on Books HI 



Spores in Syphilitic Blood (>2 



Editorial. — The Microscope in School 62 



A Chance to Use the Microscope to Save Cattle Hi 



MicKoscopicAi. Apparatus. — A Big Microtone 62 



Wax Models of Microscopic Objects 62 



MiCRO-scoPicAi, Maxipiieation. — Mayer's Carm-Alum 63 



Hermann's Fluid 63 



Diatoms. — The Grandest Collection on Earth 63 



MicRoscopirAL Societies. — The Sphinx Society, Atchison, Kans 64 



THE mTcROSCOPE. 



Contents for February, 1894. 



objects Seen Under the Microscope. IX. — Section of Stem of Beach 17 



X. — Section of Stem of Ironwood 18 



XL — Section of Stem of Sycamore. (Illustrated) 20 



Sixniges, by M. Pflaum 21 



Classification 22 



Structure 22 



Pores 2;i 



Canals 'M 



Internal Structure 26 



Life History 26 



Slides for Sale 27 



To Write on Glass 27 



Editoriae. — A Geological Survey 28 



Snails Live Indefinitely 28 



Questions Answered. — No. 188, by Dr. S. G. Shanks 29 



Pra(TIC'AE Suggestions. — by L. A. Wilson :J0 



Photomicrography 30 



Examining Writing 30 



Fats '. 31 



Stomata... 31 



Science Gossip. — Sectioning 31 



Look Sharp 31 



L'Et;KNT Pubi.K'ATIOns. — Funny Bone 'fl 



