'journIl/ian'l«T^^ NOTES AND MEMORANDA. 49 



Strieker's Handbook of Histology. — The first jjart of this work, 

 which is to be issued in English to the members of the Sydenham 

 Society, has been translated by Mr. Henry Power, F.R.C.S. It is not, 

 however, yet in the press ; but, as the MS. is complete, we may hope 

 for the jjublication of the volume early in the spring. 



Mounting Brain Sections. — Dr. Bastian informs us that the reason 

 why Stieda's process of mounting sections was not more fully given in 

 his (Dr. Bastian's) paper before the Eoyal Microscopical Society, was 

 that it had before been dealt with at length in his paper in the 

 ' Joiu'ual of Anatomy and Physiology.' 



How to choose a Microscope is the title of a paper by Dr. J. 

 Baker Edwards, in the last number of the ' Canadian Naturalist.' 



An Italian Prize for Chemical Microscopists. — A prize of nearly 

 nine hundred lire will be given next month by the Royal Institution 

 of Lombardy for the best Essay on the Chemico-microscopical Exa- 

 mination of Milk, to demonstrate the natui-e of the substance which 

 sets fermentation going, /. e. whether an organized or chemical sub- 

 stance. 



The Journal of the duekett Club. — We believe we are correct in 

 stating that the Quekett Club will not in future issue a Jom'nal, but 

 will be content with an annual volume of Proceedings. Papers, read 

 before the meetings, may, we believe, appear in our pages. 



Photography and the Microscope. — A contemporary states that 

 Dr. Moitessier's work, entitled ' Photography as an Aid to Micro- 

 scopical Research,' has been translated into German by Dr. Benecke, 

 of Konigsberg, who has re-edited and enlarged its contents. 



ToUes' New Method of Illuminating Opaque Objects under 

 High Powers. — The ' Boston Journal of Chemistry,' quoted by the 

 American ' Dental Cosmos ' of December, gives a long account of this 

 method. A description is given of Professor Smith's plan and others, 

 but the writer thinks that none of these methods have come into general 

 use ; the great difficulty with them has been that most of the light is 

 reflected to the eye of the observer by the lenses, before reaching the 

 object, thus producing a glare, which renders the object indistinct. 

 By very careful and tedious manipulation, the writer has sometimes 

 obtained a pretty good effect with Professor Smith's illuminator, but 

 more often, after working a long time, has failed. " Soon after Pro- 

 fessor Smith's instriunent was described, Mr. ToUes, then in Canastota, 

 produced an instrument varying materially from the others. In this 

 ' a prism is inserted in the side of the objective, between the front and 

 middle combinations, of such a shape that a beam of light, received 

 at the side of the objective, is thrown by a totally reflecting surface 

 through one side of the front lens, at such an angle that none of it is 

 reflected, but all passes through and is condensed on the object, and 

 from that reflected back to the eye. Only one of these instruments 

 (now owned by a physician of Boston) was then made. Recently 

 Mr. Tolles has made two more of them, and their performance is such 

 as to promise that little, if any, improvement can be expected in this 



VOL. ni. E 



