3(1 THE AMERICAN MONTHLY |.Tmii. 



as birds were (.onct.'rned, in this coiintrv; it was a wide 

 field for those i)()ssessin!j;- the opportunity of study, and no 

 doubt a ^reat deal remained to l)e discovered. The vote 

 was carried with applause. Mi". C. D. Soar exhibited a 

 series of 41 boautiful drawing's of Hydrachnidio collected 

 at the clu1)'s excursions durinsr the past season, and g-ave 

 a commentary on the life-history of the water mites in 

 g-eneral. Many of these mites are most g^eorg-eously 

 colored and marked, and the series was much admired. 



Quekett Microscopical Club. 

 The .'^47th ordinary meetingof this club was held on Fri- 

 day, December IS, at2<i, Hanover-square, Mr. J. (r. Waller, 

 K.S.A., President, in the chair. After the usual formal 

 business, Messrs. Swift exhi])ited a double perforated 

 stop for affixing- cracker g-elatine in experiments with 

 color-g-round illumination, to fit the diaphrag^m carrier of 

 the Abbe or other similar condenser. Mr. W. Stokes 

 read a paper "On Multiple Imag-es in Mirrors," illustrated 

 bv diag"rams. For the removal of these imag^es Mr. Stokes 

 advocated that microscope mirrors should l)eg-round about 

 1° from parallelism when, on rotating- the mirror in its cell, 

 the imag-es from the reflecting- surfaces would superim- 

 pose in a certain position, and so merg-e into one. A paper 

 "On a New Form of Sub-Stag-e Color Illuminator," by Mr. 

 J. Rheinberg-, was read for the author by Dr. Measures. 

 It was shown that tlie color contrasts obtainable with this 

 instrument were practicall}' unlimited. A discussion fol- 

 lowed. Mr. Nelson read a "Note on Some New Lenses," 

 pointing- out the fallacy of the term "aplanatic" as applied 

 to the ordinary triplet magniliers. ^'otes of thanks were 

 g-iven for these several communications, and the proceed- 

 ing's terminated. 



U is slated that Mr. C. K. Bishop has authorised the 

 the trustees of the Hishoj) Museum to exjtend 750. (>0() dol- 

 lars in building- an a<|Uai-iuni and marine biological station 

 at Honolulu for the stud\ of marine life in the Pacific. 

 Prof. W. T. l>righam is jtrepared to complete the plans. 



