1885.] 



MICEOSCOPICAL JOURNAL. 



157 



EDITORIAL. 



Publisher's iN'otices. — All communications, re- 

 mittances, exchanges, etc., should be addressed to the 

 Editor, P. O. Box 630, Washington, D. C. 



Remittances should be made by postal notes, money 

 orders, or by money sent in registered letters. Drafts 

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Subscription-price before April ist, Ji per year, in 

 advance. A\P subscriptions begin with the Januarj^ 

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 be $1.50. 



Ihe regular receipt of the Journal, which is issued 

 on the 15th of each month, will be an acknowledgment 

 of payment. 



The first volume, 1880, is entirely out of print. The 

 succeeding volumes will be sent by the publisher for 

 the prices given below, which are net. 



Vol. II (1881) complete, Ji 50. 



Vol. Ill (1882) complete, $2.00. 



Vol. IV (1883) complete, J1.50. 



Vol. V (1884) complete, $1.50. 



Vol. V (1884), Nos. 2-12, $i.oo. 



Mr. Zentmayer's Removal. — 

 jNIr. Zentmaver has recently changed 

 his phice of business from the build- 

 ing on .South Fourth street to No. 201 

 South Eleventh street, Philadelphia, 

 where he has opened a store, with a 

 factorv for optical apparatus in con- 

 nection with it. Hereafter he will 

 carry a full line of spectacles and eye- 

 glasses, in addition to microscopes 

 and accessories. The change will no 

 doubt be beneficial, and we wish Mr. 

 Zentmaver the best of success in his 

 new quarters. His business was es- 

 tablished in 1853. 



o 



Meetings this Month. — There 

 will doubtless be a large attendance 

 at the meetings of the American Asso- 

 ciation at Ann Ai^bor, and of the 

 American Society of Microscopists 

 at Cleveland this year. Especial ef- 

 forts have been made to make the 

 Cleveland meeting a brilliant one, and 

 Mr. Vorce has exerted himself, as 

 Chairman of the Soiree Committee, 

 to get together the greatest display of 

 objects ever yet seen. It is to be 

 hoped he will be rewarded by perfect 

 success. 



At Ann Arbor a good attendance 

 is anticipated. In addition to the 

 regular meetings of the Association, 

 the Botanical Club of the A. A. A. S. 

 holds its meetings duf ing the week of 

 the Association, from August 36th to 

 September 2d, at such times as an- 



nounced on the daily programme. A 

 good attendance of botani'sts is as- 

 sured, and subjects of general interest 

 \vill be considered. The Club offers 

 an excellent opportunity for the pre- 

 sentation of short notes and observa- 

 tions, while the weightier matters can 

 be brought before the general Asso- 

 ciation. Some excursions will be 

 made especially for the botanists, and 

 a- thoroughly enjoyable time may be 

 expected. 



o 



Prof. Smith's 'New Mounting 

 Medium. — Some misunderstanding 

 has been created by the fact that Prof. 

 Hamilton Smith has not yet seen fit 

 to make known the composition of 

 his mounting medium of high refrac- 

 tive index. We are not at present 

 authorized by Prof. Smith to make 

 an}' statement concerning this matter, 

 but from what we know, and have 

 learned from conversation with Prof. 

 Smith some tiine ago, we are assured 

 that there are excellent reasons why 

 the composition is still withheld from 

 the public. It is probable that Prof. 

 Smith is as yet not fully satisfied that 

 he has discovered the best method of 

 preparing the medium. He has ex- 

 perimented with various combinations 

 for a long time, and many of them 

 have seemed to be at first very satis- 

 factory, but they have not stood the 

 test of time. We have no doubt that 

 the principal reason for withholding 

 the composition of the fluids is that 

 Pi'of. Smith is unwilling to make it 

 public until he is fully satisfied that 

 he has obtained a perfectly reliable 

 medium, and can give full directions 

 for using it. Being ourselves ac- 

 quainted with someof the compounds 

 experimented with, and the results ob- 

 tained, we are free to say that Prof. 

 .Smith is not keeping the matter from 

 the public for any insufficient or sel- 

 fish reason — intact, it is not a secret. 



Synopsis of Diatoms. — The text 

 of this valuable work is now to be 

 obtained, and is ofiered in our adver- 

 tising columns. Although published 



