32 THE MICROSCOPE. Feb. 



THE MICROSCOPE. 



Contents for February, 1894. 



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



X. — Section of Stem of Iron wood 18 



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



Sponges, by M. Pfliuim 21 



Classification 22 



Structure 22 



Pores 23 



Canals 24 



Internal Structure 2G 



Life History 26 



Slides for Sale 27 



To Write on Glass 27 



Editorial. — A Geological Survey 28 



Snails Live Indefinitely 28 



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



Practical Suggestions.— by L. A. Wilson 30 



Photomicrography 30 



Examining Writing 30 



Fats '. 31 



Stomata 31 



Science Gossip. — Sectioning 31 



Look Sharp 31 



Recent Ptblications. — Funny Bone 31 



THE MICROSCOPICAL JOURNAL. 



Contents for February, 1894. 



On the Study of Yeasts, with Descriptions of the Hansen Culture Box and 

 of a Xe\^' Infection Xeedle tor the Study of Lower Cryptogames, 



by J. Christian Bay. (Illustrated) 33 



Aeration of Tissues and Organs in Mikania and Other Phanerogams, by 



W. W. Rowlee 4r, 



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



lladiolariau Shale from Manitoba, by Fred'k B. Carter ol 



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



B. Nias, M. D. (Illustrated) .',3 



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

 trated) 56 



A Homogeneous Objective Condenser, by William Lighton 59 



Letters to the Editor.— Rush Medical College '. 61 



Tariff on Books 61 



Spores in Syphilitic Blood 62 



Editorial.— The Microscope in School 62 



A Chance to U.se the Microscope to Save Cattle 62 



MiCROSCT)PicAL Apparatus. — A Big Microtone 62 



Wax Models of Microscopic Objects 62 



Microscopical Manipulation. — Mayer's Carm-Alum 63 



Hermann's Fluid 63 



Diatoms. — The Grandest Collection on Earth 63 



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



