182 



Journal of Applied Microscopy. 



Journal of 

 Applied Microscopy. 



Issued Monthly from the Publication Department 



of the Bausch & Lomb Optical Co., 



Rochester, N. Y. 



L. B. ELLIOTT, Editor. 



Address all communications to 

 PUBLICATION DEPARTMENT, 



Bausch & Lomb Optical Co., 



Rochester, N. Y. 



One Dollar per Year. To Foreign Countries, $1.25 

 per Year. 



Entered at the Post-office, Rochester, N. T., as second-class matter. 



OCTOBER, 1898. 



EDITORIAL. 



A large numbei^ of names for the Jour- 

 nal Microscopical Directory have been 

 received, including representative biolo- 

 gists, petrographers and others who use 

 the microscope, from nearly every quar- 

 ter of the globe. 



* * * 



The Journal has had an agency in Lon- 

 don since its second issue, notice of which 

 appears on the front cover, and persons 

 in Great Britain and Continental Europe 

 desiring to subscribe, or receive sample 

 copies, will find it more convenient to 

 communicate with our London represen- 

 tatives. We have also completed 

 arrangements with a reliable agency in 

 the Hawaiian Islands. Interested per- 

 sons in these islands or in Asia will find 

 it more convenient to order from our 

 Honolulu representatives as per address 

 on front cover, back numbers and sample 

 copies being kept on hand by them. 



* * * 



We have perfected extensive arrange- 

 ments for securing reports from leading 

 educational institutions for the depart- 

 ment of News and Notes. We believe 

 that this department will add much of 

 general interest to the Journal, and 

 extend an invitation to all institutions 

 having biological laboratories to send us, 

 regularlj', news, notes, and queries for 

 publication in this department. We 

 should also like to be in communication 

 with all the microscopical societies hold- 

 ing regular meetings, and to publish 

 notices of such meetings in the Journal. 



Current Botanical Literature. 



Chaki.er J. Chamberlain. 

 Books for review and separates of papers on bo- 

 tanical subjects should be sent to C. J. Chamberlain, 

 University of Chicago, Chicago, 111. 



It is the purpose of the Department of 

 Current Botanical Literature to present 

 brief reviews of articles of special inter- 

 est to those engaged in microscopical 

 botany and also to give under the head 

 of "Recent Literature" a list of of the 

 more important books and articles in 

 current periodicals. As a rule the 

 "Recent Literature" will refer only to 

 articles in current numbers, while the 

 reviews may take note of papers further 

 back. In referring to periodicals the 

 abbreviations in common use will be 

 employed. The number of the volume 

 will be given in bold-face type, followed 

 immediately by a colon: immediately 

 following the colon will be given the 

 pages occupied by the article and finally 

 the date: e. g., Bot. Gaz. 26: 239-246. 

 1898, means Botanical Gazette, Vol. 

 XXVI, pp. 239-246. 1898. The method is 

 brief, intelligible, and is becoming exten- 

 sively adopted by botanists. 



REVIEWS. 



During the past two years plant sper- 

 matozoids have been studied as never 

 before, and the result has been a series 

 of papers of unusual merit. A brief 

 resume is given below, the results of 

 work on Gingko, Cycas, and Zamia being 

 presented together. 



Motile antherozoids have been discov- 

 ered in Cycas revoluta by Ikeno, in 

 Gingko biloba by Hirase, and in Zamia 

 integrifolia by Webber. In the three 

 genera the antherozoids are large ovoid 

 bodies with numerous cilia at the 

 anterior end. 



1. Bot. Centralbl., 69: 1-3, 1897; also Flora 85: 1, 1898. 



2. Bot. Centralbl., 69 : 1897; also Journal of the Col- 



lege of Science Vol. XII, Pt. II. June, 1898. 



3. Bot. Gaz 23 : 451-459, 34 : 16-22, and 225-235, 1897. 



All three observers find a pair of spher- 

 ical bodies in that cell which is to give 

 rise to the two antherozoids. Ikeno and 

 Hirase call these bodies attractive 

 spheres, or centrosomes, but Webber 

 does not believe that they are centro- 

 somes and so calls them "centrosome- 

 like bodies," and later proposes the term 

 blepharoplast (cilia former) because they 

 are found to give rise to the cilia. These 

 genera resemble Pinus in the broadest 

 outlines of the development of their 

 pollen grain structures, the most strik- 

 ing divergence being that the two male 

 cells develop cilia and become motile 

 antherozoids. The presence of anthero- 

 zoids, a Pteridophyte character and a 

 pollen tube, a Spermatophyte character, 

 would induce some botanists to regard 

 such forms as "connecting links" 



