1040 SUMMARY OF CURRENT RESEARCHES RELATING TO 



Under these circumstances the publishers had to consider the alterna- 

 tives (1) of abandouing the issue of the volume; or (2) of incurring the 

 additional expense of re-translating the portion of the work totally lost by 

 the fire, replacing the missing woodcuts, and reprinting the whole ; or 

 (3) of reprinting as far as p. 374 only, omitting therefore Part VIII. 

 (Microphysics), Part IX. (Microchemistry), and Part X. (Morphology). 

 It was finally decided to adopt the last course, hence the present issue. 



Whilst it is much to be regretted that this translation should only now 

 be issued, microscopists will no doubt appreciate the advantage of having a 

 version in English of a work which has received high commendation from 

 both English and foreign critics ; and it is hoped that this volume may be 

 supplemented before long by an English version of the further researches 

 in microscopical optics by Professor E. Abbe, of Jena, which have estended 

 so much our knowledge of the matters dealt with in Nageli and Schwen- 

 dener's work." 



Death of Mr. T. Bolton. — We much regret to have to cbronicle the 

 death of Mr. T. Bolton, a Fellow of the Society. Mr. Bolton's intense 

 devotion to microscopical matters is well known to all microscopists, and 

 the perseverance with which he carried on his supply of microscopical 

 organisms was beyond all praise. His services in this connection had 

 materially added to our knowledge of the fresh-water and other fauna of 

 this country, and he was the discoverer of forms not only new to England 

 but new to science. He was ever ready to assist microscopists and 

 naturalists to the utmost of the means at his command, without, as we 

 have often found, making any sufficiently adequate pecuniary demand in 

 return. His death is a serious loss to microscopy. 



In 1884 the Council of the Royal Society placed 501. in the hands of 

 Prof. Bay Lankester for the purpose of employing Mr. Bolton to collect 

 material for an investigation of the fresh-water fauna of the midland 

 counties ; and at the Fisheries Exhibition a gold medal was awarded to him 

 for an exhibition of minute life relating to the food of fishes. It will be 

 remembered that last year, in response to a memorial signed by many 

 eminent men of science, a Civil List pension of 50Z. per annum was granted 

 to him. 



"A QuEKETT Clubman." — The Student's Handbook to the Microscope: A Practical 



Guide to its Selection and Management. 72 pp. and figs., 8vo, London, 1887. 



Alessandei, p. E. — II Microscopio e sua applicazione alia Merceologia e Bromato- 



logia. 173 pp. and 230 figs., 8vo, Milano, 1886. 



American Society of Microscopists. — ^Pittsburg Meeting. 



St. Louis Med. and Surg. Journ., LIII. (1887) pp. 229-34. 



Bkezina, a. — Das neue Goniometer der K.K. Geologischen Eeichsanstalt. (The new 



goniometer of the I.E. Geological Eeichsanstalt.) 



[The optical part is thus described : — " The observing telescope is provided with a 



Huyghenian eye-piece, which can be moved to or from the objective, so that by 



inserting a lens in front of the objective the observer is able to use the whole 



system of lenses as a Microscope, and by approaching the eye-piece towards the 



objective to convert it into a telescope. In this way the connection between the 



image of the signal and that of the face may be tested in crystals with numerous 



faces. Since, however, the telescope may be raised or lowered, by which move-- 



ments its distance from the axis of the circle is changed, the lens must also be 



capable of movement towards or from the axis. For this purpose the lens-holder 



is made to slide upon the telescope tube."] 



Jahrb. Geol. Eeichsanst, XXXIV. (1884) pp. 321-34, 

 Abstr. in Keues Jahrb. f. Mineral, II. (1887) pp. 239-40. 

 [Cope, E. D., and Kingslet, J. S.] — Wanted a Definition of a "Philosophical 

 Instrument." 



[Complaint that with the U.S. Custom ofiicials a hydrometer is a " philosophical 

 instrument," while a thermometer is a " manufacture of glass," paying a higher 



