1896 THE MICROSCOPE. 159 



stand, however, is now supplied for ;£S 5s., and this when 

 properly equipped with the necessary lenses will serve 

 every purpose for students and even practicing- pharma- 

 cists. It has a fixed stag"e, 80 mm. square, rack and pin- 

 ion coarse adjustment, and micrometer screw fine adjust- 

 ment. The stand inclines, and the tube when fully ex- 

 tended measures 160 mm. long-. Fitted with Zeiss achro- 

 matic objectives, A and D; Huyg-henian oculars. No. 2 

 and 4, and a suitable condenser, the instrument is suffi- 

 ciently complete for a student's use, whilst the further 

 addition of a 1-12 inch oil immersion objective would make 

 it suitable for all-round work in the pharmacy. 



Watson and Sons, London, list a number of useful nov- 

 elties in micro-apparatus, including- "parachromatic" ob- 

 jectives, wherein a fair ratio of aperture to power is main- 

 tained for a moderate price; an excellent "parachromatic" 

 condenser, N. A. 10, costing- but little more than the ordin- 

 ary achromatic condenser; and an improved Abbe model 

 camera lucida in aluminium, the advantag-e g-ained by the 

 use of this lig-ht metal being- considerable. The Edin- 

 burg-h Student's Microscope is now supplied in almost all 

 conceivable styles, and should specially recommend itself 

 to pharmacists. 



Impure ^A^ater in Indiana. — In Johnson county, Indiana, 

 there is a vilhig-e known as Rock Lane. Connected with 

 the Rock Lane Church is a well from which alarg-e propor- 

 tion of the people of the neighborhood drink. Over sev- 

 enty-five per cent of these people have during- the past 

 year suffered with typhoid. The water of this well has 

 been examined and found to be infected badly with intes- 

 tinal bacteria. Even a chemical anaylsis showed a bad 

 condition of affairs. It was along- time before any one dis- 

 covered that all the people taken ill were attendants at the 

 church and that the non-church g-oing- people were im- 

 mune. 



Professor A. N. Prentiss, formerly professor of Botany 

 at Cornell University died at his home in Ithaca, Aug. 14. 



