Literary Notices. 477 



by large "beautifully-executed diagrams. It appears that the air 

 sacs, which are so conspicuous in this elegant object, suddenly ex- 

 pand, and occasion the development of a complicated tracheeal sys- 

 tem. The mouth organs and internal structure of this larva were also 

 illustrated in the professor's paper. 



Mr. Browning described the spectra obtained by reflected light, 

 from the dichroic fluid, shown at theprevious meeting by the Rev. J. B. 

 Eeade, and explained that it differed very curiously from that given 

 by transmitted light, part of the yellow being replaced by green. 



LITERARY NOTICES. 



Physical Geography, by Professor D. T. Ansted, M.A., E.R.S., 

 F.R.G.S., F.G.S., Honorary Fellow of King's College, London, and 

 late Fellow of Jesus College, Cambridge. (W. H. Allen and Co.) 

 — We intend to take an early opportunity of noticing this work at 

 greater length, and will now only observe that Professor Ansted 

 has produced an admirable book adapted to the wants of students, 

 whether in colleges or private families. For general reading it is 

 the best work of the kind that we are acquainted with, being 

 written on a comprehensive plan, and in a clear and elegant style. 

 Without any parade of scientific learning, the Professor has brought 

 together in good logical array an immense mass of information, 

 laying his foundation on astronomical considerations of our earth as 

 a planet, and then examining in succession the various causes which 

 have modified its surface, and occasioned the existing distribution of 

 land and water. Atmospheric influences and climate are also well 

 treated, and the work ends with a description of the changes 

 effected by human agency. One great merit of this method of 

 treatment is that the philosophy of the subject is naturally unfolded, 

 and the student is pleasantly and insensibly led from simple ele- 

 mentary facts to those grand generalizations which emphatically con- 

 stitute science, properly so called. 



Archives of Medicine : a Record of Practical Observations, 

 and Anatomical and Chemical Researches connected with the Inves- 

 tigation and Treatment of Disease. Edited by Lionel S. Beale, 

 Vol. IV., No. xvi. (Churchill.) — In addition to notes of cases' 

 treated at King's College Hospital, this number contains several 

 important papers. Mr. J. Lockhart Clarke describes a case of 

 paraplegia resulting from a cancerous growth affecting the spinal 

 cord, and Dr. Bateman describes a fatty tumour as big as an egg 

 which grew in the cerebellum of one of his patients. It induced a 

 staggering gait, a jerking spasmodic method of speaking, and par- 

 tial loss of sight and hearing. Intelligence was unimpaired and 

 memory good. Dr. Morris Tonge describes a case in which fungi 

 were developed in the kidneys ; and other papers will well repay 

 professional perusal. 



Photographs of Eminent Medical Men of all Countries, with 

 brief Analytical Notices of their Works. Edited by W. Tindal 

 Robertson, M.D., M.R.C.P., Physician to the General Hospital, Not- 



