68 Notice of Quekett’s Treatise on the Microscope. 
The chapter on magnifying powers closes the first part of the 
book, which we cannot pass over without congratulating Mr. 
Quekett on the correction of the egregious blunder contained in 
the Ist edition in two places, pp. 73 and 160, that when the 
Ramsden eye-piece is used, “the image of the object is not re- 
versed as in the Huyghenian form: hence it has received the 
name of a positive eye piece.” We observe it stated that “the 
whole of the former edition” has been revised by Mr. Lister and 
Mr. Jackson. 
The several chapters on the Use of the Microscope, we are 
obliged to pass over entirely, merely remarking that they seem 
to be more complete, than the corresponding chapters in the first 
edition: we are glad to see that Mr. Goadby justly receives more 
credit for his methods of preparing and mounting objects, than 
was previously accorded to him. . 
r. Hett’s name appears also with just commendation as a 
preparer of objects in human and comparative anatomy. e 
consider his preparations as superior to those of other London 
anatomists, 
No new information is furnished in regard to obtaining or 
acid, then boiling it in nitric acid, then washing it 
which requires several days. If Mr. Quekett had read Professor 
generally known to all microscopists, 
ms hat in ae lapse of time between 8 | 
waning Teo Tt Stuekett might have arrived a little nearer | 
a Richmond, than North America, We would — 
i 
