
 
        
         
		Second  Class  Microscope  Stands.—Nos.  3 & 4. 
 No.  3.  B e s t  S tu d e n t’s  Microscope, w ith   u p r ig h ts   an d  jo in ts ,  
 q u ick   an d  slow m o tio n s   to   body,  g ra d u a te d   sliding  
 5  eye -pie ces  ;  th in  tu b e ,  an d   two  eye-.s ta g^  e ,. w ith   v e rtica l 
 a n d   h o riz o n tal  a c tio n s  b y  rackw o rk ,  slid in g   an d   re v 
 o lv in g   p lan e s,  an d   s])ring  c lam p in g   p ie c e ;  d ia p 
 h ragm   with   revolving  a n d   rem o v eah le  f ittin g s ;  
 d o u b le   m irro r,  w ith   le n g th e n in g   a rm ;  p lie rs, 
 fo rc ep s,  a u d  tw o   glass  p l a t e s ............................................. 
 No.  3.  B e s t  S tu d e n t’s  M icroscope ,  th e   same  as  above,  b u t   
 with   p la in   stag e ,  c o n s is tin g   o f   s lid in g   piece  an d 
 c lam p in g  sp rin g   ...................................................................... 
 U p rig h t Case fo rN ^ . 3  S ta n d   in H o n d u r a s  m ah o g an y ,  
 w ith   b o x   fo r  a])p aratu s  
 ?  fo] 
 12  12  0 
 8  0 
 ^  case  fo r  d itto   in  H o n d u ra s ,  do v e ta iled   . ..   1  6 
 N o .  4.  Sm a lle r   S tu d e n t’s  M ic roscope,  with   q u ick   a n d   slow  
 m o tio n s   to   b o d y ,  o n e   eye-piece,  slid in g   tu b e ,  stag e   
 with   s lid in g   p iec e   an d   c lam p in g   sp rin g ,  revolving  
 an d   rem oveable  d iap h ra gm ,  single   concave  m irro r,  
 p lie rs,  fo rc ep s,  glass  p la te   a n d  m ah o g a n y   c a se     5  10 
 Apparatus  to  Nos.  3  &  4  Stands. 
 No .  3  E y e -p ie c e   fo r N o .  3  o r 4  S ta n d   ...........................................   0   15  0 
 In d ic a to r   to   N o .  1  E y e -p ie c e   ............................................................   0   5  0 
 do.  N o .  2   d o ............................................................. .............  0   5  0 
 do.  N o .  3   d o ...........................................................................  0   5  0 
 A c h rom a tic   Condenser  o f  tw o   powers,  6 0 °  a n d   2 0 °  o f   a p e rtu 
 re ,  rackw o rk   a n d   a d ju s tm e n t to  b ras sw o rk   ..........   3   0   0 
 A c h rom a tic   Condenser  a s   above,  w ith   s lid in g   fittin g ,  a n d  n o 
 a d ju s tm e n t  to   b ra s sw o rk   ..................................................  2   5   0 
 A c h rom a tic   Condenser,  o i .......................................................  1  10  0 
 NacAei’5  P m m   fo r  o b liq u e   lig h t  ..................................................... .  0   18  0 
 W en h am ’s  Pa ra b o lic   Refle cto r,  with   a d ju s tin g   s to p   ..............  2   10  0 
 P o la r iz in g  A p p a ra tu s   o f   two  Nico l’s  P rism s , with   revolving 
 fittin g s ,  a n d   one  p la te   o f  s e len ite   ..................................   2   10  0 
 Two Double  Ima g e P r ism s   a n d   S e len ite   F ilm ,  w ith   fittin g s 
 to   E y e -p ie c e ,  a n d   b ra s s  p la te  with  h oles  .....................  2   2   0 
 C r y s ta ls  to   show  r in g s   ro u n d   th e   o p tic   axis  an d   fitte d   to 
 E y e -p ie c e .................................................................each  from   0  10  6 
 T o u rm a lin es ........................................................................................... from  1 0   0 
 D a r k e r ’s  S e len ite   S t a g e ............................  .............................................  2   2  0 
 t _ 
 Second Class Microscope Stands.—Nos.  3 & 4. 
 Apparatus  {continued). 
 £   s.  d. 
 SmaZiConrfcnsinpZ/cases, o n  s ta n d ,w ith  comp le te  m o v em en ts  0   12  0 
 S id e   S ilv e r   Reflecto r,  o n   sta n d , \ r i th   com p le te  m o v em e n ts ...  1 1 0 
 D a r k   W ells  o f  th r e e   sizes,  w ith  h o ld e r .............................................  0   12  6 
 B rooke’s Double  Nose-piece  .................................................................  1  10  0 
 Camera  L u c id a , W o lla s to n ’s     1 0   0 
 M icrometer,  with  J a c k so n ’s  a d ju s tin g   screw  a n d   fittin g s   to 
 E y e -p ie c e .....................................................................................   1  0   0 
 M ic rom e ter  fo r  stag e ,  d ivided  in to   lOOths  an d   lOOOths  o f an 
 in ch   ................................................................................................  0  10  0 
 Compressorium  ...........................................................................................  1  0  0 
 D itto ,  W e n h am ’s,  for  u s e  w ith  P a r a b o l a .........................................   0   7  b 
 Screw  L iv e   B o x     .......................................................................................   0   14  6 
 L a rg e  L iv e  B o x   ...........................................................................................  0  8  6 
 Sm a ller   d itto   ................................................................................................  0   6  6 
 L a rg e   Glass  Trough,  w ith  wed g e  a n d   sp rin g   com p le te   .........  0   8  6 
 Frog  P la te , w ith   b a g ,  &c.,  c om p le te ..................................................  0  10  6 
 Glass  Tubes,  s e t  o f th re e   ......................................................................   0   2  6 
 Three-pronged Forceps  ...........................................................................   0   8   6 
 Microscope  Tables. 
 W a ln u t-w o o d   T ab le,  with   im p ro v ed   revolving  fittin g ,  on 
 h an d som e   p illa r  a n d   claw,  \ r i th   le a th e r   to p       8  8 
 I ro n  T a b le , w ith   rev o lv in g   to p   ............................................................  5  5 
 Microscope  Lamps. 
 Im p ro v e d   small C am p h in e   L am p ,  with   glass  cap,  to   p rev en t 
 ev ap o ra tio n   o f  th e   sp irit wh en   n o t  in   use  
 B e s t xYi'gand L am p , w ith   b lu e   ch im n ey   fo r  b u rn in g   oil 
 Gas  L am p s  m ad e   to   o rd er. 
 2  2  0  
 I  5  0