The Microscope. 95 



children, fully appreciates Dr. Jacobi's statement in the preface of 

 the book that " of all the fatal affections that come in the first year 

 of life, forty per cent, are diseases of the digestive organs." The 

 ignorance which prevails concei'ning the proper feeding of children 

 is deplorable and is productive of many of the fatal diseases. Con- 

 sidering the value of its contents, this is one of the cheapest books 

 ever pubhshed. 



Year-book of Phakmacy for 1887, with the transactions of the British 

 Pharmaceutical Conference. T. and A. Churchill, London. 



These year-books, prepared under the supervision of the British 

 Pharmaceutical Conference, are very valuable as being careful 

 records of the progress of pharmacy and tributary sciences. The 

 present volume is, like its predecessors, filled with interesting facts 

 so arranged as to be attractive to others than pharmacists. 



CORRESPONDENCE AND QUERIES. 



F. H. C, St. Joseph, Mo. — To become a member of the 

 American Society of Microscopists, it will be necessary for you to 

 attend a meeting of the Society, and be elected by ballot. 



D. A. N., New York. — We know of no professional mounter of 

 insects in this country. Mr. B. T. Quimby, of Chicago, makes the 

 finest preparations of this class which we have seen. 



Rotifer, New York. — We do not know of any work of the kind 

 for America. Hudson & Gosse's Avork is what you want. The 

 pages of The Microscope contain articles on this subject from time 

 to time. 



F. T. B., New York. — We have published nothing, as yet, on 

 the subject you refer to, but hope to have a paper in due time. 



Dr. W., Kalamazoo. — The trouble with the specimen is, it is not 

 properly infiltrated and embedded. Place your specimens for a few 

 hours in absolute alcohol, or in a large quantity of 95 per cent, 

 alcohol ; then for an hour or two in Sqiubb''s chloroform, and finally 

 in a watch-glass of chloroform and paraffin chips, and keep at the 

 paraffin melting point for about twelve hours. This can best be 

 accomplished in an incubator. Then-embed in paraffin, taking care 

 that this is not too hot. If air-bubbles form about the specimen, 

 displace them with a hot needle before the paraffin hai'dens. The 

 imperfect infiltration, and air-bubbles about your specimen, is the 

 cause of the tearing: of the sections. 



