1898.] MICROSCOPICAL JOURNAL. 187 



MISCELLANEOUS. 



Bound Volumes. — We can supply copies of the Journal 

 bound in neat cloth of every year from 1884 to 1897 in- 

 clusive. Price for a complete set of these 14 volumes in 

 cloth binding- and subscription for the current year $20. 

 Price of sing-le volumes bound in cloth $1.50 each. 



For Exchange. — Pritchard's Infusoria illustrated with 

 306 fig-ures: O'Mera's Diatomaceae with 46 fig-ures, and 

 many other works dealing- with Microscopy offered in ex- 

 chang-e for micro-rock sections, geological literature and 

 other desiderata. Write to J. H. Cooke (Editor of Micro- 

 scopy in "Science Gossip") Edleston, Battenhall, Wor- 

 cester, Eng-land. 



An Old Book. — Zahn's "Oculus Artificialis " was pub- 

 lished in 1702. It contained among other things fig-ures of 

 a telescope-sig-ht for a musket and a cannon with the 

 leg-end: "Bombardae et omni g-enere balistarum ac tor- 

 bellicorum tubum opticem sive teliscopicum aptare, quo 

 visus ae scopum exacte dirigi poterit." A sunshine 

 recorder, "Organum heliocausticum" had the leg-end: 

 " Horas luce sono tibi sphaerula vitret monstrat, ig-nis nil 

 mirum coelicus urget opus." A series of mirrors for 

 telescopes were called "Catoprico dioptsica telescopica." 



Books. — Micrographic Dictionary by Griffith & Henfry, 

 845 pag-es and 48 plates in 2 volumes offered for $10.00 by 

 Pierce & Zahn, Denver, Colo. Also Carpenter's Micro- 

 scope for $4,00 ; Harris' Insects Injurious to Vegetation 

 for $4.50 ; Strasburger's Microscopic Botany for $1.50. 



Books. — The Chemical and Micromineralogical Re- 

 searches on the upper Cretaceous Zone of the south of Eng- 

 land by William Eraser Hume, D. Sc, can be bought from 

 Whitehead, Morris & Co., Ltd. ,9 Fenchurch St., London. 



Catalogue. — We have received the priced and illustrated 

 catalogue of microscopes and apparatus for sale by Paul 

 Thate, N. Eisasser-strause 52, Berlin, Germany. Our 

 subscribers can obtain copies by mentioning the fact to 

 Mr. Thate on postal card that they have seen this item. 



