1883.] 



MICROSCOPICAL JOURNAL. 



147 



(easily thrown out of gear when a 

 quicker motion by hand is required), 

 centering screws to secure exact rota- 

 tion round the optic axis, marginal 

 graduations, and finders engraved in 

 convenient positions. A simple and 

 effective plan has been adopted for 

 applying an iris-diaphragm, or hem- 

 ispherical illuminator, beneath this 

 stage, where they are held by a small 

 projecting peg and a spring latchet. 



Two forms of sub-stage are adapted 

 for this stand, the more elaborate of 

 which is shown in fig. 26. 



This sub-stage has rectangular mo- 

 tions for centering, actuated by two 

 milled-heads. It also makes complete 

 rotation, by means of a circular rack 

 and pinion, for varying the illumina- 

 tion, measuring angles of crystals, 

 polarization, etc. If a simpler form 

 is desired, a non-rotating sub-stage 

 can be supplied instead, with a three- 

 bearing, centering arrangement. 



Notes from Abroad. 



Spending a short time in Manches- 

 ter we were fortunate in discovering, 

 quite by accident, attracted by the 

 display of microscopes and apparatus 

 in the shop-window, Mr, E. Ward, 

 who is well known to most of our 

 readers as a preparer of series of 

 unmounted objects for microscopists. 

 Entering, for a few moments' chat with 

 Mr. Ward, we found him doing a 

 thriving business in selling micro- 

 scopes, material, and slides of his own 

 mounting. After looking over a large 

 collection of slides, and selecting a few 

 choice ones for ourselves, Mr. Ward 

 proposed that we should go out and 

 make some collections. This was an 

 opportunity not to be neglected ; so, 

 in a few moments we were on the 

 tram-car bound for Withington, a 

 suburb of Manchester. The road 

 ]5asses through the finest residence 

 portion of Manchester. On either 

 side, seated as we were on top of the 

 car, ^ve could look over high hedge- 

 rows or stone walls into the private 



grounds of the wealthy. The well- 

 kept shaded lawns and winding car- 

 riage ways, with here and there a 

 porter's lodge at the gateway, remind- 

 ed us of descriptions of English 

 homesteads we had read in books. 

 The hawthorn was in blossom, white 

 or tinged with pink, and the laburnum 

 trees were loaded with golden chains 

 of flowers. 



Finally we alighted and began our 

 tramp for the open country. One 

 really needs a guide to go collecting in 

 England, for it is so difficult to find 

 the right localities. Mr. Ward is an 

 enthusiastic and experienced collector. 

 He led the way to a place known by 

 the curious name Gatley Carrs, where 

 we found a path along a railroad. By 

 turning over the leaves of the gout- 

 weed, and looking at the under sur- 

 face, we found some good specimens 

 of the fungus Puccinia cegopodia, which 

 looked like black shining spots on the 

 leaf. This was found in considerable 

 abundance. Passing on we came to 

 a turnstile, through which we passed 

 into a path along a brook. This we 

 followed a considerable distance, pick- 

 ing a few blue bells and buttercups to 

 send home, but finding very little to 

 collect. In the brook we found some 

 beautiful Draparnaldia, in abundance, 

 and some Vaiicheria, but not much 

 else of value. Still following the path 

 which led away from the brookside, 

 along green and cultivated fields, we 

 at last reached a village, where we 

 entered a public house to wait for the 

 stage to' take us back. 



Mr. Ward does a large business in 

 mounting slides for the trade, and in 

 this work he has become very expert. 

 We are pleased to learn, therefore, 

 that his experience has fully confirmed 

 what we have so frequently stated in 

 these columns, that shellac makes the 

 best cement for general use. Mr. 

 Ward, however, has succeeded in 

 making a mixture which he calls brown 

 cement, shellac being the principal 

 constituent. The brown cement is 

 now to be obtained from the dealers, 

 and has met with a ready sale. 



