EDITORIAL. 
381  • 
On  Colophomne  and  Colophomc  hydrate. — New  substances  procured 
from  the  products  of  the  destructive  distillation  of  resin  by  Charles  R. 
C.  Tichborne,  M.R.I.A.F.C.S.,  etc. 
Received  from  the  author  by  post. 
Manufacturer  and  builder,  Yol.  1,  No  6,  June,  1869.    Western  &  Co.> 
37  Park  Row,  New  York  ;  pp.  32,  quarto — monthly. 
Two  numbers  of  this  well  illustrated  and  printed  journal  have  reached 
us,  which  speak  well  for  it  as  an  exponent  of  its  department.  It  is  full 
of  interesting  articles,  several  of  which  are  handsomely  illustrated.  Its 
price,  $1.50  per  annum,  indicates  a  large  circulation. 
Eeport  of  the  Board  of  Managers  of  the  Pennsylvania  Hospital,  to  the 
Contributors  at  their  Annual  Meeting,  held  Fifth  month  3d,  1869.  To- 
gether with  the  accounts  of  the  Treasurer  and  Stewards  ;  pp.  34,  octavo 
This  report  gives  an  exhibit  of  the  far-reaching  usefulness  of  this  most 
valuable  institution.  The  surgical  department,  according  to  the  report 
of  the  medical  corps,  has,  notwithstanding  the  absence  of  any  extensive 
catastrophes,  had  a  full  number  of  cases  of  accidents,  arising  largely 
from  the  numerous  manufacturing  establishments  which  are  in  and  near 
this  city.  As  these  cases  are  all  treated  gratuitously  if  brought  within 
24  hours  of  the  accident,  they  are  a  heavy  draft  on  the  resources  of  the 
Hospital.  Of  1948  patients  admitted,  869  were  natives,  the  others  of 
foreign  birth. 
Proceedings  of  the  State  Medical  Society  of  Michigan  for  the  year  1867 
and  1868.    Detroit,  1869  ;  pp.  116. 
In  the  report  on  new  remedies  in  this  Annual  by  Dr.  S.  P.  Duflield, 
he  says  : 
"  We  have  in  the  mineral  kingdom  a  new  element  discovered  called 
Thallium,  which  has  the  property  of  enteriog  the  circulation  and  pro- 
ducing the  most  offensive  odor  to  the  perspiration  of  the  parties  taking 
it.  Dr.  Bunsen  was  compelled  to  absent  himself  from  society  for  four 
weeks  on  this  account.  This  one  property  will  kill  it  for  all  practical 
use  in  medicine.  Its  action  is  similar  to  zinc  and  iron  on  the  economy, 
acting  as  a  tonic  and  producing  in  large  doses  severe  headaches." 
Brande  and  Taylor,  American  edition  1867,  page  346,  says  : 
"  Experiment  has  shown  that  the  salts  have  a  poisonous  action  on 
animals.  They  produce  griping  pains,  with  trembling  of  the  limbs  and 
a  state  of  paralysis.   Less  than  two  grains  has  sufficed  to  kill  a  dog,  &c.'' 
Nothing  is  said  about  its  quality  of  affecting  the  perspiration,  nor  do 
we  recollect  having  noticed  any  quality  of  this  kind  attributed  to  the  salts 
of  thallium  ;  nor  of  researches  on  thallium  by  Bunsen.    Has  not  Dr. 
