skit. 3.] INTRODUCTION. 7 



Pillisher and others, manufacture excellent instruments. Small, 

 cheap, but excellent microscopes, for students and physicians, at 

 115 to 150 francs, are best made by George Oberhduser (19, Rue 

 Dauphine, Paris); and by Nachet (16, Rue Serpente, Paris). 



For instruction in the Use of the Microscope, I may mention 

 H. von Mohl's Mikrographie (Tubingen, 1846); Haiiting, Het 

 Mikroscoop deszelfs gebruik, gescMedenis en tengenwoordige toestand 

 (Utrecht, 1848 — 50); in which works, as well as in Quekett's 

 Practical Treatise on the Use of the Microscope (London 1848); 

 Caiu'enter's Jficr'oscope and its Revelations (London, 1857); 

 Beale's How to work with the Microscope (London, 1857) > an( l 

 Robin's Du Microscope et des Injections dans leurs Applications a 

 VAnatomie et a la Pathologic (Paris, 1848), the preparation of 

 microscopic objects is, in part, discussed in detail. 



A Collection of Microscopic Preparations, especially of sections of 

 bones and teeth, and of injections, is very serviceable for a minute 

 study of Histology. Every one may with little trouble make 

 one for himself on a small scale; for which purpose, directions 

 will be found in the paragraphs at the end of each section of the 

 Special Part, as also in the works cited above. Besides, micros- 

 copical preparations are to be had in exchange or on sale from 

 Hgrtl, in Vienna; Dr. Oschatz, in Berlin; at the Microscopic 

 Institute in Wabern, near Bern; or Sch'dffer and Co., in Magde- 

 burg ; from Topping, Smith and Beck, Norman, and others, in Lon- 

 don ; and Bourgoigne and Poteau, in Paris. The largest private and 

 public collections of microscopical preparations are those of Hgrtl 

 in Vienna (injections) ; of Harting and Schroder v. d. Kolk in 

 Utrecht (injections, sections of bone, muscles, nerves) ; in Lon- 

 don, the chief are those of the College of Surgeons (animal and 

 vegetable tissues of all kinds), Tomes (^sections of teeth and bones), 

 and Carpenter (hard structures of the lower animals). Thiersch 

 and Gerlach, especially, in Erlangen, also possess numerous and 

 good injections. 



