, 
: 
- 
ILLUSTRATIONS, 
Page. 
Fic. 73. Seedling Sweet-corn Plant in Stage 
when most of Infections occur ....... 89 
74. Stomatal Infection of Sweet-corn Leaf 
by Bacterium Stewarti..............+. 90 
75. ‘A Detail from Fig. 74, highly magnified. 91 
76. Water-pore Infection by Bacterium cam- 
MA PURO s. d ois Swe Se deals én 0n 6 ou'a's 92 
77. Bacteria from Fig. 76, enlarged 2,000.... 93 
78. Single Spiral Vessel occupied by Bac- 
FOFIUME COMLPOSIVE,....ccsewccccssewvaees 03 
79. Water-pore Infection in Cabbage; a 
later stage than that shown in Fig. 76. 94 
80. Angular Leaf-spot of Cotton, Nearly 
RAR A Rem elec. cise eikns cian 90 cie (vis 95 
81. End of Vacuum-pipe on Laboratory- 
RAN eS sky Fac acigusisieenreenelees 06 
82. Portion of Work-table, showing Simple 
Apparatus for Distilling Water.... .. 97 
83. Apparatus for rapidly filling Test-tubes 
with Measured Portions of Fluid Cul- 
ROCOAMEUID, ioc his oad ales. os ie asic setsa1s 08 
84. Can for holding Culture-media......... 99 
85. Wrapped Petri Dishes.................. 100 
86. Meyer’s Hypodermic Syringe.......... IOI 
87. Sections through Tooth of a Cabbage- 
leaf, showing Entrance of Bacterium 
COMPESETE®< voc crcivcccecceeeersrevcces 102 
88. Green Cucumbers soft-rotted by Bacillus 
WON OL IU OIE Sor a5 cis nar a 8ie Reelecsligsedis Sra. ois 103 
89. Block for holding Test-tube Cultures... 104 
go. Constant Burner, with Cut-off for re- 
ducing Size of Flame...............- 105 
gt. Steel Sewing Needle (Nu. 10) set into 
Bone-handle and used for Puncture- 
BVSCMANONS  wscgercesiiateacks sees isies’s 106 
o2. Compressed-air Tank and Spray-tube... 107 
93. Atomizers for use with 92..........+... 108 
94. Hand-sprayer for Distribution of Bac- 
REEEA SS Ke tule Os sande hos or banees 109 
95. Inoculation Cage for Herbaceous Plants. 110 
96. Labels from Test-tube Cultures......... III 
97. Wooden Labels from Inoculated Plants. 111 
98. Temperature-record Sheets............. 112 
99. Nitrate-bouillon Records.............-. 113 
100. Sample from Card-catalogue, Two-thirds 
PRGUIAL SIZED ca sc cchotsbe daw abo Go's ne ee II4 
tor. Heading of Large Sheet for Volumi- 
GONE TRUMTACEE, 5. peaknesescdeaen eee II4 
1oz. Green-cucumber Skin, Contents rotted 
out by Bacillus aroideae......-.++++++ TI5 
103. Pillsbury Slide-boxes ..........-+ee0ee- 116 
104. Another Form of Pillsbury Slide-box... 117 
105. Small Paraffin-oven used by writer..... 118 
Fic. 106. 
107. 
108. 
100. 
110. 
III. 
112. 
F13: 
114. 
115. 
116, 
118. 
119. 
120. 
121. 
122. 
123. 
124. 
125. 
126. 
127. 
128. 
129. 
130. 
131. 
132. 
133. 
134. 
135. 
XI 
Page. 
Infiltrated Tissues embedded in Par- 
affin in a Watch-glass............... 119 
Infiltrated Material mounted ready to 
Ua sige! Gipre tor aipiareinieieeiasm esd nie biteibrele ee 119 
Drawer with Compartments for hold- 
ing embedded material.............. 120 
Coplin’s: Stainitiig ears caicast «cca nsse 121 
‘Coplin’s Staining Jar, cross-section.... 121 
A Series of Coplin’s Staining Jars 
Ready for Weed. seencsasneescnen ans 121 
A Page from the Paraffin-record-book.. 122 
A Mounted Slide of Serial Sections.... 122 
A, Rodgers knife for serial sections; B, 
Lentz knife for cutting hard material 
with slant stroke; C, Torrey knife for 
serial sections; D, Torrey knife for 
free-hand sections. a, b, c, d, end 
views) OF As BiG, Di vie vscsivtns cxietane 123 
Leaf-tooth of Cabbage infected by Bac- 
LEVIM COMPESIVE. 0.0 0cecccescvesees 124 
117. Details from Fig, 115.........- 124, 125 
Stomatal Infection of Cotton-leaf by 
Bacterium malvacearum............. 126 
The Reinhold-Giltay Microtome Ar- 
ranged for cutting Celloidin, etc..... 127 
Sub-stage Arrangement on Zeiss 
Standile sc worgs cs aaesiscies tieeie ese me 130 
Newer Form of Zeiss-Abbe Camera. ... 131 
Zeiss Planar Lenses.......s.sseceseses 132 
Apparatus for Photographing Natural 
Size Gt oie niis be rte erele CSIC ANS SORE eee 133 
Swinging Camera for Equal Lighting 
of Exposed Objects .+.cs¢sincsidgjese ses 134 
Petri-dish Poured Plate photographed 
by transmitted light ................ 135 
Green Leaf (Delphinium) with Black 
Spots; photographed on a rapid non- 
isochromatic plate)... cs<eces sie 138 
Green Leaf (Delphinium) with Black 
Spots; photographed on a slow iso- 
Chromatic Plates csi <.5 caigjee ste eee eieee 139 
The Wager Exposure-scale...........- I4I 
The Collins-Brown Camera, made by 
Folmer & Schwing............. Sieciis SEAS 
Cross-level for use with Camera....... 146 
Device for cutting out light in Air-shaft. 146 
Side-view of a Dark-room, convenient 
for a few Persons. ......ccceceeseees 147 
Top-view of a Dark-room, convenient 
for a few persons. ........--eeeeeees 148 
Side-view of another Small Dark- 
TOOMG, cca, cc ones sdais.cc es PO Oea9 200 148 
TTop-view of a Small Dark-room shown 
AMAL 3A view ars sain ains eri eaesionsiatgee 149 
