1895.] MICROSCOPICAL JOURNAL. 2.33 



29. This objective can be used dry or wet, with a 

 cover one two-haudred-and-fiftieth inch thick, or without 

 a cover. 



Partial List of Papers involvhig t/ie One-seventy-fifth. 

 BY G. B. HARKIMAN, D. D. H. 



" Discovery of Nerve Fibers iu the Soft Solids of D^ntiue." Dental Cos- 

 mos, January, 1870. 



"The Mirrosfope." Dental Resjister, March, 1874. 



" The Use of the One-Seventy-Fifth Objective iu Vlicrochemical Exaiuiua- 

 tious of Blood-Stains." (Unpublished. ) 



BY E. CUTTER. 



Lecture before the Chicago Medical Society, February 17, 1879, on " The 

 Morphology of Diseased Blood." Chicago Medical Journal, 1879. 



'•Tolles' One-SeveUvy-Fifth Objective, its History, Uses and Construction." 

 American Journal of Arts and Sciences, New Haven, August, 1879. 



" Leavens and Man." Written l)y invitation of the Philosophical Society 

 of Great Britain, 1882. (Bread bacteria are figured among the fifty or more 

 ilinstratious). 



" A New Physical Sign of the Pre-Tubercular State." 1877, sixty-eight 

 illustrations. 



Illustrated lecture on '' Alcohol and Blood." Tribune (Cambridge, Jan- 

 uary 15, 1879. 



Microscopical Technique Applied to Histology. — X. 



[FROM TPIE FRENCH OF RENE BONEVAL.] 



{Contijiued from, page 197, July, 1895.) 



Intestinal coats ; villi. — For the different layers no 

 special technique is needed. Sections made of the open- 

 ed intestine, after hardening by gum and alcohol, 

 stained in picro-carmine, supply the preparations. The 

 muscular elements of the villi are well seen in all these 

 sections, especially when, after fixing by bichromate, 

 they are stained in hannatoxylin and eosine. Mount in 

 balsam. 



Blood vessels. — To study these, inject them by the 

 method already described. Decapitate a rat, open the 

 thorax and introduce the syringe into the thoracic aorta. 



